{"gene":"SENP3","run_date":"2026-06-10T07:46:30","timeline":{"discoveries":[{"year":2000,"finding":"Ulp1 (yeast ortholog of SENP3) catalyzes two distinct SUMO pathway reactions: (1) processing of full-length SUMO precursor to its mature form, and (2) deconjugation of SUMO from targeted proteins. A covalent thiohemiacetal transition state complex between Ulp1 C-terminal fragment and Smt3 was captured and its crystal structure solved, revealing determinants of SUMO recognition. An N-terminal regulatory element (N-terminal to the proteolytic domain) is required for cell growth in yeast.","method":"Crystal structure of Ulp1-Smt3 covalent transition-state complex; in vitro proteolytic assays; genetic analysis","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 1 / Strong — crystal structure with functional validation by mutagenesis and in vivo genetics in a dedicated mechanistic study","pmids":["10882122"],"is_preprint":false},{"year":2000,"finding":"SMT3IP1 (human SENP3) was cloned via yeast two-hybrid with Smt3b as bait. Baculovirus-expressed SMT3IP1 cleaves SUMO-1 and Smt3b from RanGAP1 conjugates in vitro, with slightly stronger activity toward Smt3b (SUMO-2/3) conjugates. The enzyme binds Smt3a and Smt3b more strongly than SUMO-1 in vitro. SMT3IP1 does not cleave Nedd8 or ubiquitin from their conjugates. The N-terminal sequence is responsible for nucleolar localization of the enzyme.","method":"Yeast two-hybrid cloning; baculovirus expression; in vitro isopeptidase assay on RanGAP1 conjugates; in vitro binding assays; cell fractionation/immunofluorescence for localization","journal":"European journal of biochemistry","confidence":"High","confidence_rationale":"Tier 1 / Moderate — in vitro enzymatic reconstitution with substrate specificity determination plus direct localization experiment, single lab but multiple orthogonal methods","pmids":["11029585"],"is_preprint":false},{"year":2003,"finding":"The N-terminal domain of yeast Ulp1 is necessary and sufficient to concentrate Ulp1 at nuclear envelope (NPC) sites, while the Ulp domain (UD, ~200 residues) alone supports wild-type growth and can cleave SUMO from substrates in vitro. The N-terminal domain restricts Ulp1 activity toward certain sumoylated proteins while enabling cleavage of others, indicating subcellular localization as a physiologically significant constraint on substrate specificity. N-terminally deleted Ulp1 can suppress defects of ulp2Δ cells, unlike full-length Ulp1.","method":"Domain deletion analysis; in vitro SUMO cleavage assay; in vivo SUMO conjugate profiling; genetic complementation/suppression assays","journal":"The Journal of cell biology","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — in vitro assay plus in vivo genetics plus localization experiment, multiple orthogonal methods","pmids":["12654900"],"is_preprint":false},{"year":2003,"finding":"Yeast Ulp1 is tethered to nuclear pores via its non-catalytic N-domain, which associates with three karyopherins (Pse1, Kap95, and Kap60) in a complex not dissociated by RanGTP in vitro. The Ulp1 N-domain has two distinct binding sites for Pse1 and Kap95/Kap60, both required for NPC anchoring. The catalytic C-domain of Ulp1 must be excluded from the nucleoplasm for cell viability.","method":"Co-immunoprecipitation; mass spectrometry interactome; in vitro RanGTP dissociation assay; domain mapping; genetic viability assays","journal":"Nature cell biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal Co-IP with MS, in vitro binding assay, genetic validation, multiple orthogonal methods","pmids":["12471376"],"is_preprint":false},{"year":2008,"finding":"SENP3 is a nucleolar SUMO-specific protease associated with nucleophosmin (NPM1). SENP3 catalyzes desumoylation of NPM1-SUMO2 conjugates in vitro and counteracts ARF-induced SUMO2 modification of NPM1 in vivo. Depletion of SENP3 by siRNA inhibits conversion of 32S rRNA to 28S rRNA, phenocopying NPM1 depletion. Constitutive SUMO2 modification of NPM1 interferes with 28S rRNA maturation, defining SENP3 as an essential factor for ribosome biogenesis.","method":"Co-immunoprecipitation; in vitro desumoylation assay; siRNA knockdown; rRNA processing assay (Northern blot/metabolic labeling)","journal":"EMBO reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — in vitro enzymatic assay, reciprocal Co-IP, KD phenotype with defined molecular readout, multiple orthogonal methods","pmids":["18259216"],"is_preprint":false},{"year":2008,"finding":"SENP3 is a specific interaction partner of Borealin (a chromosomal passenger complex component) and catalyzes removal of SUMO2/3 from Borealin. The SUMO E3 ligase RanBP2 interacts with the CPC, stimulates SUMO modification of Borealin in vitro, and is required for its modification in vivo. This defines a mitotic SUMO2/3 conjugation-deconjugation cycle on Borealin regulated by RanBP2 and SENP3.","method":"Co-immunoprecipitation; in vitro SUMOylation assay with RanBP2; in vivo SUMOylation analysis; siRNA knockdown; mitotic synchronization","journal":"Molecular biology of the cell","confidence":"High","confidence_rationale":"Tier 2 / Moderate — reciprocal Co-IP, in vitro reconstitution assay, in vivo validation with KD, single lab with multiple orthogonal methods","pmids":["18946085"],"is_preprint":false},{"year":2008,"finding":"B23/nucleophosmin binds SENP3 and SENP5 in Xenopus laevis egg extracts and is essential for stable accumulation of SENP3 and SENP5 in mammalian tissue culture cells. Codepletion of SENP3 and SENP5, or depletion of B23/nucleophosmin, causes accumulation of SUMO proteins within nucleoli and defects in ribosome biogenesis.","method":"Co-immunoprecipitation in Xenopus extracts; siRNA depletion; SUMO localization by immunofluorescence; ribosome biogenesis assays","journal":"The Journal of cell biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — Co-IP in two experimental systems (Xenopus and mammalian cells), KD phenotype with defined molecular readout, independently corroborated by PMID 18259216","pmids":["19015314"],"is_preprint":false},{"year":2008,"finding":"ARF triggers sequential phosphorylation, polyubiquitination, and rapid proteasomal degradation of Senp3 in an NPM-dependent manner. Stabilization of both ARF and Senp3 requires NPM; viable Npm-null cells destabilize both proteins. NPM mutants retaining acidic and oligomerization domains can re-stabilize Senp3. Knockdown of Senp3 mimics the antiproliferative functions of ARF, suggesting SENP3 antagonism mediates p53-independent tumor-suppressive functions of ARF.","method":"shRNA knockdown; NPM-null MEFs; Western blot for ubiquitination and phosphorylation; NPM domain mutant rescue experiments","journal":"Cell cycle (Georgetown, Tex.)","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic epistasis in defined cell system with multiple mutant constructs, single lab","pmids":["18948745"],"is_preprint":false},{"year":2009,"finding":"SENP3 protein is continuously degraded through the ubiquitin-proteasome pathway under basal conditions; reactive oxygen species (ROS) inhibit this degradation and stabilize SENP3. ROS also causes SENP3 to redistribute from the nucleolus to the nucleoplasm. Stabilized/redistributed SENP3 de-conjugates SUMO2/3 from the HIF-1α co-activator p300 (not HIF-1α itself), which enhances p300 binding to HIF-1α and increases HIF-1 transcriptional activity.","method":"Cycloheximide chase; proteasome inhibitor treatment; immunofluorescence for subcellular redistribution; siRNA knockdown; co-immunoprecipitation; luciferase reporter; in vivo xenograft","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (KD, co-IP, subcellular localization, reporter assay, in vivo), replicated concept across multiple subsequent papers","pmids":["19680224"],"is_preprint":false},{"year":2010,"finding":"SENP3 stability is regulated by interplay between the co-chaperone/E3 ubiquitin ligase CHIP and Hsp90. Under non-stress conditions, CHIP mediates Hsp90-independent ubiquitination and degradation of SENP3. Upon mild oxidative stress, SENP3 undergoes thiol modification, which recruits Hsp90; Hsp90/SENP3 association protects SENP3 from CHIP-mediated ubiquitination, but this protection requires the presence of CHIP. Enhanced SENP3/Hsp90 association is found in cancer cells.","method":"Co-immunoprecipitation; ubiquitination assay; Hsp90 inhibitor treatment; redox thiol modification assay; Western blot stability assay","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP, in-cell ubiquitination assay, multiple perturbations (CHIP KD, Hsp90 inhibition), single lab with multiple orthogonal methods","pmids":["20924358"],"is_preprint":false},{"year":2010,"finding":"Low-dose H2O2 induces SENP3 protein accumulation and causes SENP3 to co-localize with PML bodies, resulting in de-conjugation of SUMO2/3 from PML. DeSUMOylation of PML by SENP3 reduces PML body number and is responsible for accelerated cell proliferation under mild oxidative stress; only SUMOylated PML exerts an inhibitory role on proliferation.","method":"H2O2 treatment; immunofluorescence co-localization; SUMO2/3 de-conjugation assay; siRNA knockdown; SUMOylation-deficient PML mutant rescue","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-localization, KD, mutant rescue in single lab with multiple orthogonal methods","pmids":["20181954"],"is_preprint":false},{"year":2011,"finding":"SMT3IP1/SENP3 interacts with p53 and Mdm2, and desumoylates both proteins. Overexpression of SMT3IP1 causes Mdm2 accumulation in the nucleolus, increases p53 stability, and suppresses Mdm2-mediated p53 ubiquitination and degradation. SMT3IP1 competes with p53 for binding to the acidic domain of Mdm2. Notably, the desumoylation activity of SMT3IP1 is not required for p53 stabilization.","method":"Co-immunoprecipitation; overexpression; in vivo ubiquitination assay; nucleolar localization by immunofluorescence; catalytic mutant analysis","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, overexpression with mechanistic mutant, single lab","pmids":["21316347"],"is_preprint":false},{"year":2012,"finding":"The biphasic redox regulation of HIF-1 transcriptional activity by H2O2 is mediated by differential cysteine modification of SENP3. ROS levels differentially modify cysteines 243 and 532 in SENP3, regulating its interaction with p300 to cause differential p300 SUMOylation and thereby shifting HIF-1 transcriptional activity (enhanced at low ROS, suppressed at high ROS).","method":"Dose-response H2O2 treatment; luciferase reporter; co-immunoprecipitation; chromatin immunoprecipitation; site-directed mutagenesis of SENP3 cysteines","journal":"Acta pharmacologica Sinica","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, mutagenesis, reporter assay, single lab","pmids":["22684029"],"is_preprint":false},{"year":2013,"finding":"SENP3 is degraded during oxygen/glucose deprivation (OGD, an ischemia model) via a pathway involving the UPR kinase PERK and lysosomal enzyme cathepsin B. A key target for SENP3-mediated deSUMOylation is the GTPase Drp1. SENP3 depletion prolongs Drp1 SUMOylation, suppressing Drp1 localization at mitochondria, cytochrome c release, and caspase-mediated cell death. SENP3 recovery upon reoxygenation enables Drp1 deSUMOylation and promotes mitochondrial fragmentation and cell death.","method":"RNAi knockdown; OGD model; PERK inhibitor; cathepsin B inhibitor; co-immunoprecipitation; mitochondrial fractionation; cytochrome c release assay; caspase activity assay","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — KD with defined mechanistic readout, protease pathway identification, substrate identification by co-IP, multiple orthogonal methods, subsequently replicated","pmids":["23524851"],"is_preprint":false},{"year":2014,"finding":"SENP3 controls H3K4 methylation by regulating MLL1/MLL2 histone methyltransferase complexes. SENP3 associates with MLL1/MLL2 complexes and catalyzes deSUMOylation of RbBP5. This is required for activation of HOX genes including DLX3, as SENP3 absence impairs menin and Ash2L association with the DLX3 gene, decreases H3K4 methylation, and reduces RNA polymerase II recruitment. The SENP3-DLX3 pathway governs osteogenic differentiation of human stem cells.","method":"Co-immunoprecipitation; ChIP; in vivo SUMOylation assay; siRNA knockdown; osteogenic differentiation assay; H3K4 methylation analysis","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP with complex, ChIP, KD with defined epigenetic and differentiation phenotype, multiple orthogonal methods","pmids":["24930734"],"is_preprint":false},{"year":2014,"finding":"mTOR kinase pathway controls the nucleolar targeting of SENP3 by regulating its interaction with NPM1. An N-terminal domain of SENP3 is defined as the critical NPM1 binding region; mTOR-mediated phosphorylation of serine/threonine residues within this region fosters the SENP3-NPM1 interaction. Inhibition of mTOR triggers nucleolar release of SENP3, compromising its activity in rRNA processing.","method":"mTOR inhibitor (rapamycin/Torin) treatment; domain mapping; co-immunoprecipitation; phosphorylation analysis; rRNA processing assay","journal":"Molecular and cellular biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — domain mapping, co-IP, pharmacological perturbation, single lab","pmids":["25288641"],"is_preprint":false},{"year":2014,"finding":"SENP3 promotes epithelial-mesenchymal transition (EMT) in gastric cancer via deSUMOylation of the transcription factor FOXC2. FOXC2 is identified as a SENP3 substrate; deSUMOylation of FOXC2 by SENP3 enhances its transcriptional activity toward N-cadherin. ROS-induced deSUMOylation of FOXC2 is blocked by silencing SENP3.","method":"Co-immunoprecipitation; in vivo SUMOylation assay; siRNA knockdown and overexpression; EMT marker analysis; migration assay; nude mouse model","journal":"Oncotarget","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, in vivo SUMOylation assay, KD/OE with mechanistic readout, single lab","pmids":["25216525"],"is_preprint":false},{"year":2015,"finding":"SENP3 antagonizes SUMO2/3-targeted ubiquitination of Sp1 mediated by the SUMO-targeted ubiquitin E3 ligase RNF4. DeSUMOylation of Sp1 by SENP3 attenuates Sp1 interaction with RNF4, preventing its proteasomal degradation and increasing Sp1 protein levels.","method":"Co-immunoprecipitation; ubiquitination assay; siRNA knockdown; Western blot stability assay","journal":"Protein & cell","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, ubiquitination assay, KD, single lab","pmids":["26511642"],"is_preprint":false},{"year":2016,"finding":"SENP3 enhances STAT3 phosphorylation at Y705 by de-conjugating SUMO2/3 from STAT3 at K451. SUMO2/3 modification of STAT3 at K451 facilitates STAT3 binding to the phosphatase TC45 through a SUMO-interacting motif of TC45, thereby dephosphorylating STAT3. SENP3-mediated deSUMOylation of STAT3 prevents TC45 binding and thus enhances STAT3 phosphorylation.","method":"Co-immunoprecipitation; site-directed mutagenesis (K451); siRNA knockdown; phosphorylation assay; tobacco extract treatment","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, mutagenesis of SUMOylation site, KD, mechanistic model validated by multiple experiments, single lab","pmids":["27181202"],"is_preprint":false},{"year":2017,"finding":"SENP3-mediated deSUMOylation of Drp1 selectively promotes Drp1 binding to the mitochondrial outer membrane adaptor protein Mff. Preventing Drp1 SUMOylation (SUMO acceptor site mutants) enhances Mff binding; increasing SUMOylation by SENP3 knockdown reduces Drp1-Mff binding and stress-induced cytochrome c release. Direct tethering of Drp1 to the mitochondrial outer membrane occludes the effect of SENP3 overexpression.","method":"Co-immunoprecipitation; SUMO acceptor site mutagenesis; siRNA knockdown; SENP3 overexpression; cytochrome c release assay; mitochondrial tethering construct","journal":"Scientific reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, mutagenesis, KD/OE with mechanistic phenotype, single lab","pmids":["28262828"],"is_preprint":false},{"year":2017,"finding":"FLII (flightless-I homolog, a gelsolin family actin-remodeling protein) associates with SENP3 and the MLL1/2 complex, determines SENP3 recruitment and MLL1/2 complex assembly at the DLX3 gene, and is required for H3K4 methylation, active RNA polymerase II loading, and osteogenic differentiation.","method":"Co-immunoprecipitation; ChIP; siRNA knockdown; osteogenic differentiation assay","journal":"Epigenetics & chromatin","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, ChIP, KD phenotype, single lab","pmids":["28344658"],"is_preprint":false},{"year":2018,"finding":"SENP3 maintains Treg cell stability and function by controlling SUMOylation and nuclear localization of BACH2. SENP3-mediated deSUMOylation of BACH2 prevents its nuclear export, thereby repressing effector T cell differentiation genes and stabilizing Treg gene signatures. Treg-specific deletion of Senp3 results in T cell activation and autoimmune symptoms. ROS-driven SENP3 accumulation in the tumor microenvironment contributes to Treg-mediated tumor immunosuppression.","method":"Conditional Senp3 knockout (Treg-specific); co-immunoprecipitation; nuclear/cytoplasmic fractionation; SUMOylation assay; gene expression profiling","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional KO with in vivo phenotype, co-IP, fractionation showing functional localization consequence, multiple orthogonal methods","pmids":["30089837"],"is_preprint":false},{"year":2018,"finding":"SENP3 deficiency in myeloid cells markedly compromises TLR4 inflammatory signaling and JNK phosphorylation in response to LPS. MKK7, which selectively phosphorylates JNK, is a SENP3 substrate; SENP3-mediated deSUMOylation of MKK7 favors its binding to JNK. ROS-dependent SENP3 accumulation and MKK7 deSUMOylation occur rapidly after LPS stimulation.","method":"Conditional Senp3 KO in myeloid cells; LPS-induced inflammation model; co-immunoprecipitation; JNK phosphorylation assay; septic shock model","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional KO in vivo, co-IP, substrate identification, kinase phosphorylation readout, multiple orthogonal methods","pmids":["29352108"],"is_preprint":false},{"year":2018,"finding":"Mitotic phosphorylation of SENP3 by Cyclin B-CDK1 suppresses SENP3 deSUMOylation activity toward chromosome-associated proteins including topoisomerase IIα (TopoIIα). Protein phosphatase 1α (PP1α) is the phosphatase that reverses this modification. SENP3 phosphorylation decreases its interaction with TopoIIα. Non-phosphorylatable SENP3 mutant causes mitotic arrest, increased chromosomal instability, and tumorigenesis promotion.","method":"Kinase identification (CDK1); phosphatase identification (PP1α); co-immunoprecipitation; phospho-mutant analysis; chromosome instability assay; tumorigenesis assay","journal":"Cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — kinase/phosphatase identification by co-IP, phospho-mutant with defined phenotype, single lab","pmids":["29438989"],"is_preprint":false},{"year":2019,"finding":"SENP3 deSUMOylates BECN1 (beclin 1) at K380, a SUMO3-conjugation site mediated by PIAS3. BECN1 SUMOylation enhances autophagosome formation by facilitating BECN1 interaction with UVRAG, PIK3C3, and ATG14, promoting PIK3C3 activity. SENP3 deSUMOylates BECN1 to impair BECN1-PIK3C3 complex formation, suppressing PIK3C3 activity and autophagy. Liver-specific Senp3 KO mice show increased autophagy under basal and fasting conditions.","method":"Liver-specific conditional KO; co-immunoprecipitation; SUMOylation assay; PIK3C3 activity assay; autophagic flux measurement; site-directed mutagenesis (K380)","journal":"Autophagy","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional KO in vivo, mutagenesis of SUMOylation site, PIK3C3 activity assay, multiple orthogonal methods","pmids":["31373534"],"is_preprint":false},{"year":2019,"finding":"SENP3 is associated with the SETD7 histone methyltransferase and deSUMOylates SETD7. In muscle cells, SENP3 recruits SETD7 to the sarcomeric MyHC-II gene, promotes SETD7 association with active RNA polymerase II, and precludes the opposing methyltransferase Suv39h1. SENP3 is degraded in cachexia, leading to perturbed MyHC-II expression and disorganized sarcomeres.","method":"Co-immunoprecipitation; ChIP; in vivo SUMOylation assay; siRNA knockdown; muscle cell contractility assay; cachexia model","journal":"Cell reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, ChIP, in vivo SUMOylation assay, KD phenotype, single lab","pmids":["31141694"],"is_preprint":false},{"year":2019,"finding":"SUMO1 catalyzes NLRP3 SUMOylation at K204, which facilitates ASC oligomerization, inflammasome activation, and IL-1β secretion. SENP3 is required for deSUMOylation of NLRP3 and, upon deSUMOylation, attenuates ASC recruitment, speck formation, inflammasome activation, and IL-1β cleavage.","method":"Co-immunoprecipitation; SUMOylation assay; siRNA knockdown; ASC speck formation assay; IL-1β ELISA; site-directed mutagenesis (K204)","journal":"FASEB journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, mutagenesis, KD with functional readout, single lab","pmids":["31914638"],"is_preprint":false},{"year":2020,"finding":"p53 suppresses SENP3 phosphorylation in response to DNA damage at G2/M phase. Suppression of SENP3 phosphorylation activates SENP3 deSUMOylation of Cdh1, which promotes Cdh1 dephosphorylation by Cdc14B, activates APC/CCdh1 E3 ligase, and leads to ubiquitination and degradation of Plk1 in the G2 checkpoint pathway.","method":"Co-immunoprecipitation; SUMOylation assay; phosphorylation analysis; CDK1/CDK2 inhibitors; Cdc14B phosphatase assay; Plk1 ubiquitination assay; G2 arrest assay","journal":"Cell discovery","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, kinase/phosphatase epistasis, KD with defined cell cycle phenotype, single lab","pmids":["32351703"],"is_preprint":false},{"year":2020,"finding":"SENP3 loss in bone marrow-derived monocytes promotes osteoclast differentiation. Mechanistically, loss of SENP3 increases SUMO3 modification of IRF8 at K310, which upregulates NFATc1 expression and osteoclastogenesis. Myeloid-specific SENP3 KO mice exhibit more severe bone loss after ovariectomy.","method":"Conditional SENP3 KO (myeloid); SUMOylation assay; site-directed mutagenesis (K310); NFATc1 expression analysis; osteoclast differentiation assay; ovariectomy model","journal":"Cell reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional KO in vivo, mutagenesis of SUMOylation site, defined mechanistic pathway, multiple orthogonal methods","pmids":["32049023"],"is_preprint":false},{"year":2021,"finding":"SENP3 senses ROS in dendritic cells (DCs) to facilitate STING-dependent antitumor immunity. DC-derived ROS trigger SENP3 accumulation and the SENP3-IFI204 interaction; SENP3 catalyzes IFI204 deSUMOylation to boost STING signaling activation. DC-specific deletion of Senp3 blunts STING-dependent type-I interferon signaling and dampens antitumor immune responses.","method":"DC-specific conditional Senp3 KO; co-immunoprecipitation; IFI204 SUMOylation assay; STING signaling assay; IFN-I measurement; tumor growth model","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional KO with in vivo phenotype, co-IP, substrate SUMOylation assay, multiple orthogonal methods","pmids":["33434504"],"is_preprint":false},{"year":2021,"finding":"SENP3 loss in macrophages promotes M2 polarization by causing enhanced Akt1 SUMOylation and hyper-phosphorylation/activation of Akt1. Macrophage-specific deletion of SENP3 in vivo accelerates breast cancer malignancy.","method":"Conditional SENP3 KO (macrophage-specific); co-immunoprecipitation; Akt1 SUMOylation assay; Akt1 phosphorylation assay; M2 polarization assay; orthotopic tumor model","journal":"Molecular oncology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — conditional KO in vivo, co-IP, substrate phosphorylation/SUMOylation assay, single lab","pmids":["33932085"],"is_preprint":false},{"year":2021,"finding":"SENP3 interacts with β-catenin and inhibits its proteasome-dependent degradation via de-SUMOylation of β-catenin, promoting VSMC proliferation and migration and vascular remodeling. SENP3+/- mice exhibit alleviated vascular remodeling.","method":"Co-immunoprecipitation; in vivo deSUMOylation assay; siRNA knockdown/overexpression; VSMC proliferation/migration assay; SENP3 heterozygous KO mouse model","journal":"EBioMedicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, in vivo SUMOylation assay, heterozygous KO, single lab","pmids":["34000626"],"is_preprint":false},{"year":2021,"finding":"SENP3 promotes Drp1 binding to Bcl-xL at the mitochondrial outer membrane in a manner primed by Mff. DeSUMOylation of Drp1 by SENP3 promotes the Drp1-Bcl-xL interaction in vivo and in vitro. Mff and Bcl-xL can interact directly through their transmembrane domains independent of Drp1. SENP3 loss during OGD correlates with reduced Drp1-Bcl-xL interaction, contributing to cell death after reoxygenation.","method":"Co-immunoprecipitation; in vitro binding assay; SUMO acceptor site mutants; OGD/reoxygenation model; Bcl-xL transmembrane domain mutant","journal":"Frontiers in cell and developmental biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, in vitro binding, mutagenesis, single lab","pmids":["34722538"],"is_preprint":false},{"year":2022,"finding":"SENP3 is responsible for deSUMOylation of mitochondrial fission protein Fis1 at K149 (a residue critical for Fis1 mitochondrial localization). DFP treatment stabilizes SENP3 via downregulation of the E3 ubiquitin ligase CHIP. SENP3-mediated Fis1 deSUMOylation enhances Fis1 mitochondrial targeting and is required for DFP-induced mitophagy. Fis1 K149R mutation (preventing SUMOylation) enhances mitochondrial localization and restores mitophagy in SENP3-depleted cells.","method":"siRNA knockdown; co-immunoprecipitation; Fis1 K149R site-directed mutant; mitophagy assay; mitochondrial fractionation; CHIP Western blot","journal":"EMBO reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — mutagenesis of SUMOylation site with functional rescue, KD, mitochondrial localization with functional consequence, CHIP-mediated stability mechanism, multiple orthogonal methods","pmids":["34994490"],"is_preprint":false},{"year":2022,"finding":"TIP60 is hyper-SUMOylated under normal conditions; upon irradiation-induced DNA damage, SENP3-mediated deSUMOylation of TIP60 promotes its interaction with DNA-PKcs to form the TIP60-DNA-PKcs complex. This is required for TIP60-mediated acetylation of DNA-PKcs and DNA-PKcs autophosphorylation, enabling NHEJ-mediated DNA damage repair. SENP3 knockdown impairs DNA damage repair.","method":"Co-immunoprecipitation; TIP60/DNA-PKcs acetylation assay; NHEJ reporter system; comet assay; γH2AX immunofluorescence; clonogenic survival assay","journal":"MedComm","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, functional repair assays, KD, single lab","pmids":["35356800"],"is_preprint":false},{"year":2021,"finding":"SENP3 and SENP5 deSUMOylate Aurora A (AurA) at K258, where SUMO2 conjugation in early mitosis promotes AurA kinase activity and facilitates binding with its activator Bora. Knockdown of SENP3 and SENP5 increases AurA SUMOylation, leading to increased kinase activity and abnormalities in spindle assembly and chromosome segregation; these defects are rescued by suppressing AurA kinase activity.","method":"In vivo and in vitro SUMOylation assay; site-directed mutagenesis (K258); co-immunoprecipitation; kinase activity assay; spindle assembly checkpoint assay; siRNA knockdown","journal":"Journal of cell science","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vitro and in vivo assays, mutagenesis, kinase activity assay, KD with defined phenotype; note SENP5 acts in concert so SENP3-specific contribution requires interpretation","pmids":["34313310"],"is_preprint":false},{"year":2022,"finding":"Mitotic activation of SENP3 (by prevention of inhibitory phosphorylation) in tumor cells increases micronuclei formation, which activates cGAS signaling-dependent innate immune response and increases CD8+ T cell infiltration. p53 responding to DNA damage activates mitotic SENP3 by inhibiting its phosphorylation, further increasing cellular senescence and innate immune response.","method":"Phospho-mutant SENP3 expression; micronuclei quantification; cGAS-STING pathway assay; immune-competent mouse tumor model; CD8+ T cell flow cytometry","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — phospho-mutant with in vivo tumor immune phenotype, mechanistic pathway assay, single lab","pmids":["35869062"],"is_preprint":false},{"year":2023,"finding":"The enzymatic activity of SENP3 is required for deSUMOylation of rixosome subunits, which is necessary for association of the rixosome with PRC1 and for silencing of Polycomb target genes. Both SENP3 and USP7 enzymatic activities are required for Polycomb- and rixosome-dependent silencing at an ectopic reporter locus.","method":"Co-immunoprecipitation; SUMOylation assay; siRNA knockdown with catalytic mutant rescue; reporter silencing assay; ChIP","journal":"Cell reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, catalytic mutant, reporter assay, single lab","pmids":["37014752"],"is_preprint":false},{"year":2023,"finding":"The Brucella effectors NyxA and NyxB directly interact with SENP3 via a defined acidic patch (identified by crystal structure of NyxB) and prevent nucleolar localization of SENP3 at late stages of infection. By sequestering SENP3, the effectors promote cytoplasmic accumulation of nucleolar AAA-ATPase NVL and ribosomal protein RPL5. SENP3 normally regulates the subcellular localization of these nucleolar proteins through its SUMO protease activity; the Beclin1 and PIAS3 were also found to be required for the effector-dependent shuttling.","method":"Crystal structure of NyxB-acidic patch; co-immunoprecipitation; SENP3 localization by immunofluorescence; NVL/RPL5 localization analysis; genetic epistasis with Beclin1 and PIAS3","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1 / Moderate — crystal structure with functional validation, co-IP, localization experiments, epistasis analysis","pmids":["36609656"],"is_preprint":false},{"year":2023,"finding":"SENP3-mediated deSUMOylation of c-Jun activates its transcriptional activity and the MAPK/AP-1 signaling pathway in microglia following cerebral ischemia. Microglia-specific SENP3 knockdown reduces neuroinflammation, infarct volume, and neurological deficits after ischemic stroke.","method":"Co-immunoprecipitation; deSUMOylation assay; microglia-specific KD; cytokine measurement; infarct volume measurement","journal":"iScience","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, substrate identification, KD with defined in vivo phenotype, single lab","pmids":["37332598"],"is_preprint":false},{"year":2024,"finding":"SENP3 deSUMOylates RACK1, increasing RACK1 stability and its interaction with PKCβII, thereby promoting eIF4E phosphorylation and translation of oncogenes (Bcl2, Snail, Cyclin D1) in hepatocellular carcinoma. SENP3 also promotes CCL20 translation via the RACK1/eIF4E axis, facilitating tumor-associated macrophage infiltration and immune evasion.","method":"Co-immunoprecipitation; SUMOylation assay; RACK1 stability assay; eIF4E phosphorylation assay; liver-specific SENP3 KD; chemically induced HCC model","journal":"Cell death and differentiation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, in vivo KD, substrate stability assay, translation readout, single lab","pmids":["39755756"],"is_preprint":false},{"year":2024,"finding":"SENP3 promotes hypoxia-induced mitophagy (HIM) through deSUMOylation of FIS1. Under hypoxia, FIS1 SUMO2/3-ylation promotes interaction with Rab GAP protein TBC1D17, which suppresses HIM. SENP3-mediated FIS1 deSUMOylation counteracts TBC1D17-mediated suppression, promoting mitophagy and cell survival under hypoxia.","method":"Co-immunoprecipitation; FIS1 SUMOylation assay; TBC1D17 interaction assay; mitophagy assay; hypoxia model; siRNA knockdown; glioblastoma patient-derived cultures","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, SUMOylation assay with functional pathway analysis, KD, disease-relevant samples, single lab","pmids":["39638786"],"is_preprint":false},{"year":2025,"finding":"SENP3 deSUMOylates CTH (Cystathionine Gamma-Lyase) at K361, facilitating its proteasome-dependent degradation. SUMO-3 modification of CTH at K361 promotes CTH protein stability. SENP3-mediated CTH degradation reduces H2S production, promoting macrophage ferroptosis and inflammation in abdominal aortic aneurysm. SENP3 expression is negatively regulated by the E3 ubiquitin ligase STUB1/CHIP.","method":"Co-immunoprecipitation; SUMOylation assay; site-directed mutagenesis (K361); CTH stability assay; myeloid-specific SENP3 KO; AAA mouse models (AngII and CaCl2); ferroptosis assay","journal":"Advanced science","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — conditional KO in vivo, mutagenesis, substrate stability assay, single lab","pmids":["40019399"],"is_preprint":false}],"current_model":"SENP3 is a SUMO2/3-specific isopeptidase (cysteine protease) that is constitutively degraded via CHIP-mediated ubiquitination but is stabilized by ROS through Hsp90 recruitment and thiol modification, allowing it to redistribute from the nucleolus to the nucleoplasm and cytoplasm where it deSUMOylates a broad range of substrates—including p300, Drp1, NPM1, RbBP5, BECN1, BACH2, MKK7, IFI204, FIS1, IRF8, TIP60, Aurora A, Borealin, Fis1, CTH, and others—thereby regulating ribosome biogenesis, mitochondrial fission/mitophagy, HIF-1 transcription, immune signaling, chromatin modification, cell death, and differentiation; its activity is also regulated by cell-cycle-dependent phosphorylation by CDK1 (reversed by PP1α) and by mTOR-mediated phosphorylation that controls its NPM1-dependent nucleolar tethering."},"narrative":{"mechanistic_narrative":"SENP3 is a SUMO2/3-specific cysteine isopeptidase that deconjugates SUMO from substrate proteins and is the human counterpart of the yeast protease Ulp1, whose crystallized covalent transition-state complex with the SUMO ortholog Smt3 defined the catalytic and SUMO-recognition determinants of this protease family [PMID:10882122, PMID:11029585]. The enzyme is constitutively short-lived: under basal conditions the co-chaperone E3 ligase CHIP (STUB1) ubiquitinates SENP3 for proteasomal degradation, while reactive oxygen species drive thiol modification of specific cysteines that recruits Hsp90, protecting SENP3 from CHIP and stabilizing the protein [PMID:19680224, PMID:20924358]. This redox switch makes SENP3 a ROS sensor that accumulates and redistributes from the nucleolus to the nucleoplasm and cytoplasm, with its nucleolar tethering controlled by NPM1 binding through an N-terminal domain that requires mTOR-mediated phosphorylation [PMID:11029585, PMID:19680224, PMID:25288641]. In the nucleolus SENP3, together with NPM1, deSUMOylates NPM1 itself to drive 28S rRNA maturation and ribosome biogenesis [PMID:18259216, PMID:19015314]. Once stabilized and relocalized, SENP3 acts on a broad substrate range to control diverse processes: it deSUMOylates the HIF-1 co-activator p300 in a redox-tuned manner to set HIF-1 transcriptional output [PMID:19680224, PMID:22684029]; it deSUMOylates the fission GTPase Drp1 and the fission protein FIS1 to govern mitochondrial fragmentation, apoptotic cytochrome c release, and mitophagy [PMID:23524851, PMID:28262828, PMID:34994490, PMID:39638786]; it regulates chromatin through deSUMOylation of MLL-complex subunit RbBP5 and the methyltransferases SETD7, controlling H3K4 methylation, HOX/DLX3 transcription, and lineage differentiation [PMID:24930734, PMID:31141694]; and it modulates innate and adaptive immunity by deSUMOylating MKK7, IFI204, BACH2, and IRF8 to tune JNK/TLR4 signaling, STING-dependent interferon responses, Treg stability, and osteoclastogenesis [PMID:30089837, PMID:29352108, PMID:32049023, PMID:33434504]. Its catalytic activity is further gated through the cell cycle by inhibitory CDK1 phosphorylation reversed by PP1α, linking SENP3 to mitotic chromosome stability and the p53-controlled G2 checkpoint [PMID:29438989, PMID:32351703].","teleology":[{"year":2000,"claim":"Established the catalytic basis of the SENP/Ulp protease family: a single enzyme both matures SUMO precursors and deconjugates SUMO from substrates, and the structural determinants of SUMO recognition were defined.","evidence":"Crystal structure of the Ulp1-Smt3 covalent transition-state complex with in vitro proteolytic assays and yeast genetics","pmids":["10882122"],"confidence":"High","gaps":["Yeast ortholog rather than human SENP3","Did not address substrate selectivity in mammalian cells"]},{"year":2000,"claim":"Identified human SENP3 (SMT3IP1) as a SUMO2/3-preferring isopeptidase and localized its nucleolar targeting to an N-terminal sequence, distinguishing it from ubiquitin/Nedd8 proteases.","evidence":"Yeast two-hybrid cloning, baculovirus expression, in vitro isopeptidase assays on RanGAP1 conjugates, and localization","pmids":["11029585"],"confidence":"High","gaps":["In vitro substrate specificity may not reflect cellular targets","Mechanism of nucleolar retention not defined"]},{"year":2003,"claim":"Showed that subcellular localization, imposed by the non-catalytic N-domain, is a physiological constraint on which SUMO substrates the protease can access.","evidence":"Domain deletion, in vitro cleavage, in vivo conjugate profiling, and karyopherin interaction mapping in yeast Ulp1","pmids":["12654900","12471376"],"confidence":"High","gaps":["Yeast tethering uses karyopherins/NPC; human SENP3 uses a distinct NPM1-based mechanism","Direct mammalian carryover not demonstrated here"]},{"year":2008,"claim":"Defined SENP3's first concrete cellular role: NPM1-associated deSUMOylation required for 28S rRNA maturation and ribosome biogenesis, with NPM1 also stabilizing the protein.","evidence":"Co-IP, in vitro desumoylation of NPM1-SUMO2, siRNA knockdown with rRNA processing readouts in mammalian and Xenopus systems","pmids":["18259216","19015314","18948745"],"confidence":"High","gaps":["Full set of nucleolar substrates beyond NPM1 not defined","ARF/p53-independent contributions only partially resolved"]},{"year":2009,"claim":"Identified SENP3 as a ROS-responsive enzyme that is stabilized and relocalized by oxidative stress, linking redox state to HIF-1 transcriptional output via p300 deSUMOylation.","evidence":"Cycloheximide chase, proteasome inhibition, immunofluorescence redistribution, co-IP, luciferase reporter, and xenograft","pmids":["19680224","22684029"],"confidence":"High","gaps":["Which cysteines sense ROS clarified later (#12) but full redox proteomics absent","Quantitative thresholds of ROS sensing not established"]},{"year":2010,"claim":"Resolved the molecular basis of SENP3 turnover: CHIP drives constitutive ubiquitination/degradation, while ROS-induced thiol modification recruits Hsp90 to protect SENP3.","evidence":"Co-IP, in-cell ubiquitination assays, CHIP knockdown, Hsp90 inhibition, and redox thiol modification assays","pmids":["20924358","20181954"],"confidence":"High","gaps":["How Hsp90 binding sterically blocks CHIP not structurally defined","Other E3 ligases for SENP3 not excluded"]},{"year":2013,"claim":"Connected SENP3 to mitochondrial fission and cell death by identifying Drp1 as a substrate whose deSUMOylation promotes mitochondrial recruitment, cytochrome c release, and caspase activation.","evidence":"OGD ischemia model, PERK/cathepsin B inhibition, co-IP, mitochondrial fractionation, and cytochrome c/caspase assays","pmids":["23524851","28262828","34722538"],"confidence":"High","gaps":["Stress-specific degradation pathways (PERK/cathepsin B vs CHIP) not unified","Quantitative apoptotic threshold control unclear"]},{"year":2014,"claim":"Demonstrated SENP3 controls chromatin and differentiation by deSUMOylating MLL-complex subunit RbBP5 and being targeted via NPM1/mTOR-regulated nucleolar tethering.","evidence":"Co-IP with MLL complexes, ChIP, in vivo SUMOylation, osteogenic differentiation assays, and mTOR inhibitor/domain-mapping experiments","pmids":["24930734","15","25288641","28344658","31141694"],"confidence":"High","gaps":["How mTOR phosphorylation toggles between rRNA and chromatin functions not resolved","Breadth of chromatin substrates incomplete"]},{"year":2018,"claim":"Established SENP3 as a redox-gated regulator of immunity, deSUMOylating MKK7, BACH2, and later IFI204 and IRF8 to control inflammatory signaling, Treg stability, interferon responses, and osteoclastogenesis.","evidence":"Lineage-specific conditional Senp3 knockouts (myeloid, Treg, DC), co-IP, SUMOylation assays, and in vivo inflammation/tumor models","pmids":["29352108","30089837","33434504","32049023"],"confidence":"High","gaps":["Substrate selection across immune contexts not mechanistically unified","How localization changes dictate immune-specific substrates unclear"]},{"year":2018,"claim":"Showed SENP3 catalytic activity is gated through mitosis by inhibitory CDK1 phosphorylation (reversed by PP1α) and by p53 during the G2 checkpoint, linking it to chromosome stability and APC/C control.","evidence":"Kinase/phosphatase identification, phospho-mutant analysis, co-IP, chromosome instability and G2 arrest assays","pmids":["29438989","32351703","35869062"],"confidence":"Medium","gaps":["Single-lab phospho-mutant studies","Structural basis of phospho-regulation of catalysis not defined"]},{"year":2022,"claim":"Extended SENP3's mitochondrial role to mitophagy and identified FIS1 K149 deSUMOylation, with structural evidence that the Brucella effectors NyxA/NyxB sequester SENP3 through a defined acidic patch.","evidence":"FIS1 K149R mutagenesis, mitophagy/hypoxia assays, and crystal structure of NyxB with localization/epistasis experiments","pmids":["34994490","39638786","36609656"],"confidence":"High","gaps":["How SENP3 distinguishes fission vs mitophagy outcomes on FIS1/Drp1 unclear","Pathogen-driven sequestration physiological scope limited"]},{"year":2025,"claim":"Expanded the substrate repertoire to stability control (RACK1, CTH, β-catenin, Sp1, STAT3), showing SENP3 deSUMOylation can either stabilize or destabilize targets to influence translation, metabolism, and disease.","evidence":"Co-IP, SUMOylation/stability assays, site-directed mutagenesis, and conditional knockouts in HCC, AAA, and vascular remodeling models","pmids":["39755756","40019399","34000626","26511642","27181202"],"confidence":"Medium","gaps":["Why deSUMOylation stabilizes some substrates but destabilizes others not mechanistically generalized","Most studies single-lab in disease-specific contexts"]},{"year":null,"claim":"How SENP3 selects among its very broad substrate set across compartments and stress states—and whether localization, phosphorylation, redox state, and partner availability constitute a unified targeting code—remains unresolved.","evidence":"No single study integrates the determinants of SENP3 substrate selectivity","pmids":[],"confidence":"Low","gaps":["No systematic substrate-targeting model","No structure of full-length human SENP3","Compartment-specific interactomes incompletely mapped"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[0,1,4,13,14,33]},{"term_id":"GO:0016787","term_label":"hydrolase activity","supporting_discovery_ids":[0,1,4]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[8,18,19,22,41]}],"localization":[{"term_id":"GO:0005730","term_label":"nucleolus","supporting_discovery_ids":[1,4,6,8,15,38]},{"term_id":"GO:0005654","term_label":"nucleoplasm","supporting_discovery_ids":[8]},{"term_id":"GO:0005829","term_label":"cytosol","supporting_discovery_ids":[8,22]},{"term_id":"GO:0005739","term_label":"mitochondrion","supporting_discovery_ids":[13,19,33,41]}],"pathway":[{"term_id":"R-HSA-8953854","term_label":"Metabolism of RNA","supporting_discovery_ids":[4,6]},{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[8,9,17]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[21,22,26,28,29]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[5,23,27,35]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[14,25,37]},{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[13,32]},{"term_id":"R-HSA-9612973","term_label":"Autophagy","supporting_discovery_ids":[24,33,41]},{"term_id":"R-HSA-8953897","term_label":"Cellular responses to stimuli","supporting_discovery_ids":[8,9,12]}],"complexes":["MLL1/MLL2 histone methyltransferase complex","chromosomal passenger complex","rixosome"],"partners":["NPM1","HSP90","STUB1","DRP1","FIS1","RBBP5","P300","MKK7"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q9H4L4","full_name":"Sentrin-specific protease 3","aliases":["SUMO-1-specific protease 3","Sentrin/SUMO-specific protease SENP3"],"length_aa":574,"mass_kda":65.0,"function":"Protease that releases SUMO2 and SUMO3 monomers from sumoylated substrates, but has only weak activity against SUMO1 conjugates (PubMed:16608850, PubMed:32832608, PubMed:36050397). Deconjugates SUMO2 from MEF2D, which increases its transcriptional activation capability (PubMed:15743823). Deconjugates SUMO2 and SUMO3 from CDCA8 (PubMed:18946085). Redox sensor that, when redistributed into nucleoplasm, can act as an effector to enhance HIF1A transcriptional activity by desumoylating EP300 (PubMed:19680224). Required for rRNA processing through deconjugation of SUMO2 and SUMO3 from nucleophosmin, NPM1 (PubMed:19015314). Plays a role in the regulation of sumoylation status of ZNF148 (PubMed:18259216). Functions as a component of the Five Friends of Methylated CHTOP (5FMC) complex; the 5FMC complex is recruited to ZNF148 by methylated CHTOP, leading to desumoylation of ZNF148 and subsequent transactivation of ZNF148 target genes (PubMed:22872859). Deconjugates SUMO2 from KAT5 (PubMed:32832608). Catalyzes desumoylation of MRE11 (PubMed:36050397)","subcellular_location":"Nucleus, nucleolus; Nucleus, nucleoplasm; Cytoplasm","url":"https://www.uniprot.org/uniprotkb/Q9H4L4/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/SENP3","classification":"Not Classified","n_dependent_lines":0,"n_total_lines":74,"dependency_fraction":0.0},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/SENP3","total_profiled":1310},"omim":[{"mim_id":"620291","title":"WD REPEAT-CONTAINING PROTEIN 18; WDR18","url":"https://www.omim.org/entry/620291"},{"mim_id":"618738","title":"TUBULIN TYROSINE LIGASE-LIKE 4; TTLL4","url":"https://www.omim.org/entry/618738"},{"mim_id":"616717","title":"TESTIS-EXPRESSED GENE 10; TEX10","url":"https://www.omim.org/entry/616717"},{"mim_id":"612845","title":"SENTRIN-SPECIFIC PROTEASE FAMILY, MEMBER 5; SENP5","url":"https://www.omim.org/entry/612845"},{"mim_id":"612844","title":"SENTRIN-SPECIFIC PROTEASE FAMILY, MEMBER 3; SENP3","url":"https://www.omim.org/entry/612844"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoli","reliability":"Supported"},{"location":"Nucleoplasm","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/SENP3"},"hgnc":{"alias_symbol":["DKFZP586K0919","SSP3","DKFZp762A152","SMT3IP1","Ulp1"],"prev_symbol":[]},"alphafold":{"accession":"Q9H4L4","domains":[{"cath_id":"3.40.395.10","chopping":"381-570","consensus_level":"high","plddt":95.6576,"start":381,"end":570},{"cath_id":"1.10.10","chopping":"312-370","consensus_level":"high","plddt":93.2997,"start":312,"end":370}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9H4L4","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9H4L4-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9H4L4-F1-predicted_aligned_error_v6.png","plddt_mean":64.56},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=SENP3","jax_strain_url":"https://www.jax.org/strain/search?query=SENP3"},"sequence":{"accession":"Q9H4L4","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9H4L4.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9H4L4/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9H4L4"}},"corpus_meta":[{"pmid":"10882122","id":"PMC_10882122","title":"Ulp1-SUMO 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A covalent thiohemiacetal transition state complex between Ulp1 C-terminal fragment and Smt3 was captured and its crystal structure solved, revealing determinants of SUMO recognition. An N-terminal regulatory element (N-terminal to the proteolytic domain) is required for cell growth in yeast.\",\n      \"method\": \"Crystal structure of Ulp1-Smt3 covalent transition-state complex; in vitro proteolytic assays; genetic analysis\",\n      \"journal\": \"Molecular cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — crystal structure with functional validation by mutagenesis and in vivo genetics in a dedicated mechanistic study\",\n      \"pmids\": [\"10882122\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"SMT3IP1 (human SENP3) was cloned via yeast two-hybrid with Smt3b as bait. Baculovirus-expressed SMT3IP1 cleaves SUMO-1 and Smt3b from RanGAP1 conjugates in vitro, with slightly stronger activity toward Smt3b (SUMO-2/3) conjugates. The enzyme binds Smt3a and Smt3b more strongly than SUMO-1 in vitro. SMT3IP1 does not cleave Nedd8 or ubiquitin from their conjugates. The N-terminal sequence is responsible for nucleolar localization of the enzyme.\",\n      \"method\": \"Yeast two-hybrid cloning; baculovirus expression; in vitro isopeptidase assay on RanGAP1 conjugates; in vitro binding assays; cell fractionation/immunofluorescence for localization\",\n      \"journal\": \"European journal of biochemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro enzymatic reconstitution with substrate specificity determination plus direct localization experiment, single lab but multiple orthogonal methods\",\n      \"pmids\": [\"11029585\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"The N-terminal domain of yeast Ulp1 is necessary and sufficient to concentrate Ulp1 at nuclear envelope (NPC) sites, while the Ulp domain (UD, ~200 residues) alone supports wild-type growth and can cleave SUMO from substrates in vitro. The N-terminal domain restricts Ulp1 activity toward certain sumoylated proteins while enabling cleavage of others, indicating subcellular localization as a physiologically significant constraint on substrate specificity. N-terminally deleted Ulp1 can suppress defects of ulp2Δ cells, unlike full-length Ulp1.\",\n      \"method\": \"Domain deletion analysis; in vitro SUMO cleavage assay; in vivo SUMO conjugate profiling; genetic complementation/suppression assays\",\n      \"journal\": \"The Journal of cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — in vitro assay plus in vivo genetics plus localization experiment, multiple orthogonal methods\",\n      \"pmids\": [\"12654900\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"Yeast Ulp1 is tethered to nuclear pores via its non-catalytic N-domain, which associates with three karyopherins (Pse1, Kap95, and Kap60) in a complex not dissociated by RanGTP in vitro. The Ulp1 N-domain has two distinct binding sites for Pse1 and Kap95/Kap60, both required for NPC anchoring. The catalytic C-domain of Ulp1 must be excluded from the nucleoplasm for cell viability.\",\n      \"method\": \"Co-immunoprecipitation; mass spectrometry interactome; in vitro RanGTP dissociation assay; domain mapping; genetic viability assays\",\n      \"journal\": \"Nature cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal Co-IP with MS, in vitro binding assay, genetic validation, multiple orthogonal methods\",\n      \"pmids\": [\"12471376\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"SENP3 is a nucleolar SUMO-specific protease associated with nucleophosmin (NPM1). SENP3 catalyzes desumoylation of NPM1-SUMO2 conjugates in vitro and counteracts ARF-induced SUMO2 modification of NPM1 in vivo. Depletion of SENP3 by siRNA inhibits conversion of 32S rRNA to 28S rRNA, phenocopying NPM1 depletion. Constitutive SUMO2 modification of NPM1 interferes with 28S rRNA maturation, defining SENP3 as an essential factor for ribosome biogenesis.\",\n      \"method\": \"Co-immunoprecipitation; in vitro desumoylation assay; siRNA knockdown; rRNA processing assay (Northern blot/metabolic labeling)\",\n      \"journal\": \"EMBO reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — in vitro enzymatic assay, reciprocal Co-IP, KD phenotype with defined molecular readout, multiple orthogonal methods\",\n      \"pmids\": [\"18259216\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"SENP3 is a specific interaction partner of Borealin (a chromosomal passenger complex component) and catalyzes removal of SUMO2/3 from Borealin. The SUMO E3 ligase RanBP2 interacts with the CPC, stimulates SUMO modification of Borealin in vitro, and is required for its modification in vivo. This defines a mitotic SUMO2/3 conjugation-deconjugation cycle on Borealin regulated by RanBP2 and SENP3.\",\n      \"method\": \"Co-immunoprecipitation; in vitro SUMOylation assay with RanBP2; in vivo SUMOylation analysis; siRNA knockdown; mitotic synchronization\",\n      \"journal\": \"Molecular biology of the cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal Co-IP, in vitro reconstitution assay, in vivo validation with KD, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"18946085\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"B23/nucleophosmin binds SENP3 and SENP5 in Xenopus laevis egg extracts and is essential for stable accumulation of SENP3 and SENP5 in mammalian tissue culture cells. Codepletion of SENP3 and SENP5, or depletion of B23/nucleophosmin, causes accumulation of SUMO proteins within nucleoli and defects in ribosome biogenesis.\",\n      \"method\": \"Co-immunoprecipitation in Xenopus extracts; siRNA depletion; SUMO localization by immunofluorescence; ribosome biogenesis assays\",\n      \"journal\": \"The Journal of cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — Co-IP in two experimental systems (Xenopus and mammalian cells), KD phenotype with defined molecular readout, independently corroborated by PMID 18259216\",\n      \"pmids\": [\"19015314\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"ARF triggers sequential phosphorylation, polyubiquitination, and rapid proteasomal degradation of Senp3 in an NPM-dependent manner. Stabilization of both ARF and Senp3 requires NPM; viable Npm-null cells destabilize both proteins. NPM mutants retaining acidic and oligomerization domains can re-stabilize Senp3. Knockdown of Senp3 mimics the antiproliferative functions of ARF, suggesting SENP3 antagonism mediates p53-independent tumor-suppressive functions of ARF.\",\n      \"method\": \"shRNA knockdown; NPM-null MEFs; Western blot for ubiquitination and phosphorylation; NPM domain mutant rescue experiments\",\n      \"journal\": \"Cell cycle (Georgetown, Tex.)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic epistasis in defined cell system with multiple mutant constructs, single lab\",\n      \"pmids\": [\"18948745\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"SENP3 protein is continuously degraded through the ubiquitin-proteasome pathway under basal conditions; reactive oxygen species (ROS) inhibit this degradation and stabilize SENP3. ROS also causes SENP3 to redistribute from the nucleolus to the nucleoplasm. Stabilized/redistributed SENP3 de-conjugates SUMO2/3 from the HIF-1α co-activator p300 (not HIF-1α itself), which enhances p300 binding to HIF-1α and increases HIF-1 transcriptional activity.\",\n      \"method\": \"Cycloheximide chase; proteasome inhibitor treatment; immunofluorescence for subcellular redistribution; siRNA knockdown; co-immunoprecipitation; luciferase reporter; in vivo xenograft\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (KD, co-IP, subcellular localization, reporter assay, in vivo), replicated concept across multiple subsequent papers\",\n      \"pmids\": [\"19680224\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"SENP3 stability is regulated by interplay between the co-chaperone/E3 ubiquitin ligase CHIP and Hsp90. Under non-stress conditions, CHIP mediates Hsp90-independent ubiquitination and degradation of SENP3. Upon mild oxidative stress, SENP3 undergoes thiol modification, which recruits Hsp90; Hsp90/SENP3 association protects SENP3 from CHIP-mediated ubiquitination, but this protection requires the presence of CHIP. Enhanced SENP3/Hsp90 association is found in cancer cells.\",\n      \"method\": \"Co-immunoprecipitation; ubiquitination assay; Hsp90 inhibitor treatment; redox thiol modification assay; Western blot stability assay\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP, in-cell ubiquitination assay, multiple perturbations (CHIP KD, Hsp90 inhibition), single lab with multiple orthogonal methods\",\n      \"pmids\": [\"20924358\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"Low-dose H2O2 induces SENP3 protein accumulation and causes SENP3 to co-localize with PML bodies, resulting in de-conjugation of SUMO2/3 from PML. DeSUMOylation of PML by SENP3 reduces PML body number and is responsible for accelerated cell proliferation under mild oxidative stress; only SUMOylated PML exerts an inhibitory role on proliferation.\",\n      \"method\": \"H2O2 treatment; immunofluorescence co-localization; SUMO2/3 de-conjugation assay; siRNA knockdown; SUMOylation-deficient PML mutant rescue\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-localization, KD, mutant rescue in single lab with multiple orthogonal methods\",\n      \"pmids\": [\"20181954\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"SMT3IP1/SENP3 interacts with p53 and Mdm2, and desumoylates both proteins. Overexpression of SMT3IP1 causes Mdm2 accumulation in the nucleolus, increases p53 stability, and suppresses Mdm2-mediated p53 ubiquitination and degradation. SMT3IP1 competes with p53 for binding to the acidic domain of Mdm2. Notably, the desumoylation activity of SMT3IP1 is not required for p53 stabilization.\",\n      \"method\": \"Co-immunoprecipitation; overexpression; in vivo ubiquitination assay; nucleolar localization by immunofluorescence; catalytic mutant analysis\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, overexpression with mechanistic mutant, single lab\",\n      \"pmids\": [\"21316347\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"The biphasic redox regulation of HIF-1 transcriptional activity by H2O2 is mediated by differential cysteine modification of SENP3. ROS levels differentially modify cysteines 243 and 532 in SENP3, regulating its interaction with p300 to cause differential p300 SUMOylation and thereby shifting HIF-1 transcriptional activity (enhanced at low ROS, suppressed at high ROS).\",\n      \"method\": \"Dose-response H2O2 treatment; luciferase reporter; co-immunoprecipitation; chromatin immunoprecipitation; site-directed mutagenesis of SENP3 cysteines\",\n      \"journal\": \"Acta pharmacologica Sinica\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, mutagenesis, reporter assay, single lab\",\n      \"pmids\": [\"22684029\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"SENP3 is degraded during oxygen/glucose deprivation (OGD, an ischemia model) via a pathway involving the UPR kinase PERK and lysosomal enzyme cathepsin B. A key target for SENP3-mediated deSUMOylation is the GTPase Drp1. SENP3 depletion prolongs Drp1 SUMOylation, suppressing Drp1 localization at mitochondria, cytochrome c release, and caspase-mediated cell death. SENP3 recovery upon reoxygenation enables Drp1 deSUMOylation and promotes mitochondrial fragmentation and cell death.\",\n      \"method\": \"RNAi knockdown; OGD model; PERK inhibitor; cathepsin B inhibitor; co-immunoprecipitation; mitochondrial fractionation; cytochrome c release assay; caspase activity assay\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — KD with defined mechanistic readout, protease pathway identification, substrate identification by co-IP, multiple orthogonal methods, subsequently replicated\",\n      \"pmids\": [\"23524851\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"SENP3 controls H3K4 methylation by regulating MLL1/MLL2 histone methyltransferase complexes. SENP3 associates with MLL1/MLL2 complexes and catalyzes deSUMOylation of RbBP5. This is required for activation of HOX genes including DLX3, as SENP3 absence impairs menin and Ash2L association with the DLX3 gene, decreases H3K4 methylation, and reduces RNA polymerase II recruitment. The SENP3-DLX3 pathway governs osteogenic differentiation of human stem cells.\",\n      \"method\": \"Co-immunoprecipitation; ChIP; in vivo SUMOylation assay; siRNA knockdown; osteogenic differentiation assay; H3K4 methylation analysis\",\n      \"journal\": \"Molecular cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP with complex, ChIP, KD with defined epigenetic and differentiation phenotype, multiple orthogonal methods\",\n      \"pmids\": [\"24930734\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"mTOR kinase pathway controls the nucleolar targeting of SENP3 by regulating its interaction with NPM1. An N-terminal domain of SENP3 is defined as the critical NPM1 binding region; mTOR-mediated phosphorylation of serine/threonine residues within this region fosters the SENP3-NPM1 interaction. Inhibition of mTOR triggers nucleolar release of SENP3, compromising its activity in rRNA processing.\",\n      \"method\": \"mTOR inhibitor (rapamycin/Torin) treatment; domain mapping; co-immunoprecipitation; phosphorylation analysis; rRNA processing assay\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — domain mapping, co-IP, pharmacological perturbation, single lab\",\n      \"pmids\": [\"25288641\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"SENP3 promotes epithelial-mesenchymal transition (EMT) in gastric cancer via deSUMOylation of the transcription factor FOXC2. FOXC2 is identified as a SENP3 substrate; deSUMOylation of FOXC2 by SENP3 enhances its transcriptional activity toward N-cadherin. ROS-induced deSUMOylation of FOXC2 is blocked by silencing SENP3.\",\n      \"method\": \"Co-immunoprecipitation; in vivo SUMOylation assay; siRNA knockdown and overexpression; EMT marker analysis; migration assay; nude mouse model\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, in vivo SUMOylation assay, KD/OE with mechanistic readout, single lab\",\n      \"pmids\": [\"25216525\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"SENP3 antagonizes SUMO2/3-targeted ubiquitination of Sp1 mediated by the SUMO-targeted ubiquitin E3 ligase RNF4. DeSUMOylation of Sp1 by SENP3 attenuates Sp1 interaction with RNF4, preventing its proteasomal degradation and increasing Sp1 protein levels.\",\n      \"method\": \"Co-immunoprecipitation; ubiquitination assay; siRNA knockdown; Western blot stability assay\",\n      \"journal\": \"Protein & cell\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, ubiquitination assay, KD, single lab\",\n      \"pmids\": [\"26511642\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"SENP3 enhances STAT3 phosphorylation at Y705 by de-conjugating SUMO2/3 from STAT3 at K451. SUMO2/3 modification of STAT3 at K451 facilitates STAT3 binding to the phosphatase TC45 through a SUMO-interacting motif of TC45, thereby dephosphorylating STAT3. SENP3-mediated deSUMOylation of STAT3 prevents TC45 binding and thus enhances STAT3 phosphorylation.\",\n      \"method\": \"Co-immunoprecipitation; site-directed mutagenesis (K451); siRNA knockdown; phosphorylation assay; tobacco extract treatment\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, mutagenesis of SUMOylation site, KD, mechanistic model validated by multiple experiments, single lab\",\n      \"pmids\": [\"27181202\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"SENP3-mediated deSUMOylation of Drp1 selectively promotes Drp1 binding to the mitochondrial outer membrane adaptor protein Mff. Preventing Drp1 SUMOylation (SUMO acceptor site mutants) enhances Mff binding; increasing SUMOylation by SENP3 knockdown reduces Drp1-Mff binding and stress-induced cytochrome c release. Direct tethering of Drp1 to the mitochondrial outer membrane occludes the effect of SENP3 overexpression.\",\n      \"method\": \"Co-immunoprecipitation; SUMO acceptor site mutagenesis; siRNA knockdown; SENP3 overexpression; cytochrome c release assay; mitochondrial tethering construct\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, mutagenesis, KD/OE with mechanistic phenotype, single lab\",\n      \"pmids\": [\"28262828\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"FLII (flightless-I homolog, a gelsolin family actin-remodeling protein) associates with SENP3 and the MLL1/2 complex, determines SENP3 recruitment and MLL1/2 complex assembly at the DLX3 gene, and is required for H3K4 methylation, active RNA polymerase II loading, and osteogenic differentiation.\",\n      \"method\": \"Co-immunoprecipitation; ChIP; siRNA knockdown; osteogenic differentiation assay\",\n      \"journal\": \"Epigenetics & chromatin\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, ChIP, KD phenotype, single lab\",\n      \"pmids\": [\"28344658\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"SENP3 maintains Treg cell stability and function by controlling SUMOylation and nuclear localization of BACH2. SENP3-mediated deSUMOylation of BACH2 prevents its nuclear export, thereby repressing effector T cell differentiation genes and stabilizing Treg gene signatures. Treg-specific deletion of Senp3 results in T cell activation and autoimmune symptoms. ROS-driven SENP3 accumulation in the tumor microenvironment contributes to Treg-mediated tumor immunosuppression.\",\n      \"method\": \"Conditional Senp3 knockout (Treg-specific); co-immunoprecipitation; nuclear/cytoplasmic fractionation; SUMOylation assay; gene expression profiling\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional KO with in vivo phenotype, co-IP, fractionation showing functional localization consequence, multiple orthogonal methods\",\n      \"pmids\": [\"30089837\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"SENP3 deficiency in myeloid cells markedly compromises TLR4 inflammatory signaling and JNK phosphorylation in response to LPS. MKK7, which selectively phosphorylates JNK, is a SENP3 substrate; SENP3-mediated deSUMOylation of MKK7 favors its binding to JNK. ROS-dependent SENP3 accumulation and MKK7 deSUMOylation occur rapidly after LPS stimulation.\",\n      \"method\": \"Conditional Senp3 KO in myeloid cells; LPS-induced inflammation model; co-immunoprecipitation; JNK phosphorylation assay; septic shock model\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional KO in vivo, co-IP, substrate identification, kinase phosphorylation readout, multiple orthogonal methods\",\n      \"pmids\": [\"29352108\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Mitotic phosphorylation of SENP3 by Cyclin B-CDK1 suppresses SENP3 deSUMOylation activity toward chromosome-associated proteins including topoisomerase IIα (TopoIIα). Protein phosphatase 1α (PP1α) is the phosphatase that reverses this modification. SENP3 phosphorylation decreases its interaction with TopoIIα. Non-phosphorylatable SENP3 mutant causes mitotic arrest, increased chromosomal instability, and tumorigenesis promotion.\",\n      \"method\": \"Kinase identification (CDK1); phosphatase identification (PP1α); co-immunoprecipitation; phospho-mutant analysis; chromosome instability assay; tumorigenesis assay\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — kinase/phosphatase identification by co-IP, phospho-mutant with defined phenotype, single lab\",\n      \"pmids\": [\"29438989\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SENP3 deSUMOylates BECN1 (beclin 1) at K380, a SUMO3-conjugation site mediated by PIAS3. BECN1 SUMOylation enhances autophagosome formation by facilitating BECN1 interaction with UVRAG, PIK3C3, and ATG14, promoting PIK3C3 activity. SENP3 deSUMOylates BECN1 to impair BECN1-PIK3C3 complex formation, suppressing PIK3C3 activity and autophagy. Liver-specific Senp3 KO mice show increased autophagy under basal and fasting conditions.\",\n      \"method\": \"Liver-specific conditional KO; co-immunoprecipitation; SUMOylation assay; PIK3C3 activity assay; autophagic flux measurement; site-directed mutagenesis (K380)\",\n      \"journal\": \"Autophagy\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional KO in vivo, mutagenesis of SUMOylation site, PIK3C3 activity assay, multiple orthogonal methods\",\n      \"pmids\": [\"31373534\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SENP3 is associated with the SETD7 histone methyltransferase and deSUMOylates SETD7. In muscle cells, SENP3 recruits SETD7 to the sarcomeric MyHC-II gene, promotes SETD7 association with active RNA polymerase II, and precludes the opposing methyltransferase Suv39h1. SENP3 is degraded in cachexia, leading to perturbed MyHC-II expression and disorganized sarcomeres.\",\n      \"method\": \"Co-immunoprecipitation; ChIP; in vivo SUMOylation assay; siRNA knockdown; muscle cell contractility assay; cachexia model\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, ChIP, in vivo SUMOylation assay, KD phenotype, single lab\",\n      \"pmids\": [\"31141694\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SUMO1 catalyzes NLRP3 SUMOylation at K204, which facilitates ASC oligomerization, inflammasome activation, and IL-1β secretion. SENP3 is required for deSUMOylation of NLRP3 and, upon deSUMOylation, attenuates ASC recruitment, speck formation, inflammasome activation, and IL-1β cleavage.\",\n      \"method\": \"Co-immunoprecipitation; SUMOylation assay; siRNA knockdown; ASC speck formation assay; IL-1β ELISA; site-directed mutagenesis (K204)\",\n      \"journal\": \"FASEB journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, mutagenesis, KD with functional readout, single lab\",\n      \"pmids\": [\"31914638\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"p53 suppresses SENP3 phosphorylation in response to DNA damage at G2/M phase. Suppression of SENP3 phosphorylation activates SENP3 deSUMOylation of Cdh1, which promotes Cdh1 dephosphorylation by Cdc14B, activates APC/CCdh1 E3 ligase, and leads to ubiquitination and degradation of Plk1 in the G2 checkpoint pathway.\",\n      \"method\": \"Co-immunoprecipitation; SUMOylation assay; phosphorylation analysis; CDK1/CDK2 inhibitors; Cdc14B phosphatase assay; Plk1 ubiquitination assay; G2 arrest assay\",\n      \"journal\": \"Cell discovery\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, kinase/phosphatase epistasis, KD with defined cell cycle phenotype, single lab\",\n      \"pmids\": [\"32351703\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"SENP3 loss in bone marrow-derived monocytes promotes osteoclast differentiation. Mechanistically, loss of SENP3 increases SUMO3 modification of IRF8 at K310, which upregulates NFATc1 expression and osteoclastogenesis. Myeloid-specific SENP3 KO mice exhibit more severe bone loss after ovariectomy.\",\n      \"method\": \"Conditional SENP3 KO (myeloid); SUMOylation assay; site-directed mutagenesis (K310); NFATc1 expression analysis; osteoclast differentiation assay; ovariectomy model\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional KO in vivo, mutagenesis of SUMOylation site, defined mechanistic pathway, multiple orthogonal methods\",\n      \"pmids\": [\"32049023\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"SENP3 senses ROS in dendritic cells (DCs) to facilitate STING-dependent antitumor immunity. DC-derived ROS trigger SENP3 accumulation and the SENP3-IFI204 interaction; SENP3 catalyzes IFI204 deSUMOylation to boost STING signaling activation. DC-specific deletion of Senp3 blunts STING-dependent type-I interferon signaling and dampens antitumor immune responses.\",\n      \"method\": \"DC-specific conditional Senp3 KO; co-immunoprecipitation; IFI204 SUMOylation assay; STING signaling assay; IFN-I measurement; tumor growth model\",\n      \"journal\": \"Molecular cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional KO with in vivo phenotype, co-IP, substrate SUMOylation assay, multiple orthogonal methods\",\n      \"pmids\": [\"33434504\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"SENP3 loss in macrophages promotes M2 polarization by causing enhanced Akt1 SUMOylation and hyper-phosphorylation/activation of Akt1. Macrophage-specific deletion of SENP3 in vivo accelerates breast cancer malignancy.\",\n      \"method\": \"Conditional SENP3 KO (macrophage-specific); co-immunoprecipitation; Akt1 SUMOylation assay; Akt1 phosphorylation assay; M2 polarization assay; orthotopic tumor model\",\n      \"journal\": \"Molecular oncology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional KO in vivo, co-IP, substrate phosphorylation/SUMOylation assay, single lab\",\n      \"pmids\": [\"33932085\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"SENP3 interacts with β-catenin and inhibits its proteasome-dependent degradation via de-SUMOylation of β-catenin, promoting VSMC proliferation and migration and vascular remodeling. SENP3+/- mice exhibit alleviated vascular remodeling.\",\n      \"method\": \"Co-immunoprecipitation; in vivo deSUMOylation assay; siRNA knockdown/overexpression; VSMC proliferation/migration assay; SENP3 heterozygous KO mouse model\",\n      \"journal\": \"EBioMedicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, in vivo SUMOylation assay, heterozygous KO, single lab\",\n      \"pmids\": [\"34000626\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"SENP3 promotes Drp1 binding to Bcl-xL at the mitochondrial outer membrane in a manner primed by Mff. DeSUMOylation of Drp1 by SENP3 promotes the Drp1-Bcl-xL interaction in vivo and in vitro. Mff and Bcl-xL can interact directly through their transmembrane domains independent of Drp1. SENP3 loss during OGD correlates with reduced Drp1-Bcl-xL interaction, contributing to cell death after reoxygenation.\",\n      \"method\": \"Co-immunoprecipitation; in vitro binding assay; SUMO acceptor site mutants; OGD/reoxygenation model; Bcl-xL transmembrane domain mutant\",\n      \"journal\": \"Frontiers in cell and developmental biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, in vitro binding, mutagenesis, single lab\",\n      \"pmids\": [\"34722538\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"SENP3 is responsible for deSUMOylation of mitochondrial fission protein Fis1 at K149 (a residue critical for Fis1 mitochondrial localization). DFP treatment stabilizes SENP3 via downregulation of the E3 ubiquitin ligase CHIP. SENP3-mediated Fis1 deSUMOylation enhances Fis1 mitochondrial targeting and is required for DFP-induced mitophagy. Fis1 K149R mutation (preventing SUMOylation) enhances mitochondrial localization and restores mitophagy in SENP3-depleted cells.\",\n      \"method\": \"siRNA knockdown; co-immunoprecipitation; Fis1 K149R site-directed mutant; mitophagy assay; mitochondrial fractionation; CHIP Western blot\",\n      \"journal\": \"EMBO reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — mutagenesis of SUMOylation site with functional rescue, KD, mitochondrial localization with functional consequence, CHIP-mediated stability mechanism, multiple orthogonal methods\",\n      \"pmids\": [\"34994490\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"TIP60 is hyper-SUMOylated under normal conditions; upon irradiation-induced DNA damage, SENP3-mediated deSUMOylation of TIP60 promotes its interaction with DNA-PKcs to form the TIP60-DNA-PKcs complex. This is required for TIP60-mediated acetylation of DNA-PKcs and DNA-PKcs autophosphorylation, enabling NHEJ-mediated DNA damage repair. SENP3 knockdown impairs DNA damage repair.\",\n      \"method\": \"Co-immunoprecipitation; TIP60/DNA-PKcs acetylation assay; NHEJ reporter system; comet assay; γH2AX immunofluorescence; clonogenic survival assay\",\n      \"journal\": \"MedComm\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, functional repair assays, KD, single lab\",\n      \"pmids\": [\"35356800\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"SENP3 and SENP5 deSUMOylate Aurora A (AurA) at K258, where SUMO2 conjugation in early mitosis promotes AurA kinase activity and facilitates binding with its activator Bora. Knockdown of SENP3 and SENP5 increases AurA SUMOylation, leading to increased kinase activity and abnormalities in spindle assembly and chromosome segregation; these defects are rescued by suppressing AurA kinase activity.\",\n      \"method\": \"In vivo and in vitro SUMOylation assay; site-directed mutagenesis (K258); co-immunoprecipitation; kinase activity assay; spindle assembly checkpoint assay; siRNA knockdown\",\n      \"journal\": \"Journal of cell science\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vitro and in vivo assays, mutagenesis, kinase activity assay, KD with defined phenotype; note SENP5 acts in concert so SENP3-specific contribution requires interpretation\",\n      \"pmids\": [\"34313310\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Mitotic activation of SENP3 (by prevention of inhibitory phosphorylation) in tumor cells increases micronuclei formation, which activates cGAS signaling-dependent innate immune response and increases CD8+ T cell infiltration. p53 responding to DNA damage activates mitotic SENP3 by inhibiting its phosphorylation, further increasing cellular senescence and innate immune response.\",\n      \"method\": \"Phospho-mutant SENP3 expression; micronuclei quantification; cGAS-STING pathway assay; immune-competent mouse tumor model; CD8+ T cell flow cytometry\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — phospho-mutant with in vivo tumor immune phenotype, mechanistic pathway assay, single lab\",\n      \"pmids\": [\"35869062\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"The enzymatic activity of SENP3 is required for deSUMOylation of rixosome subunits, which is necessary for association of the rixosome with PRC1 and for silencing of Polycomb target genes. Both SENP3 and USP7 enzymatic activities are required for Polycomb- and rixosome-dependent silencing at an ectopic reporter locus.\",\n      \"method\": \"Co-immunoprecipitation; SUMOylation assay; siRNA knockdown with catalytic mutant rescue; reporter silencing assay; ChIP\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, catalytic mutant, reporter assay, single lab\",\n      \"pmids\": [\"37014752\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"The Brucella effectors NyxA and NyxB directly interact with SENP3 via a defined acidic patch (identified by crystal structure of NyxB) and prevent nucleolar localization of SENP3 at late stages of infection. By sequestering SENP3, the effectors promote cytoplasmic accumulation of nucleolar AAA-ATPase NVL and ribosomal protein RPL5. SENP3 normally regulates the subcellular localization of these nucleolar proteins through its SUMO protease activity; the Beclin1 and PIAS3 were also found to be required for the effector-dependent shuttling.\",\n      \"method\": \"Crystal structure of NyxB-acidic patch; co-immunoprecipitation; SENP3 localization by immunofluorescence; NVL/RPL5 localization analysis; genetic epistasis with Beclin1 and PIAS3\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — crystal structure with functional validation, co-IP, localization experiments, epistasis analysis\",\n      \"pmids\": [\"36609656\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"SENP3-mediated deSUMOylation of c-Jun activates its transcriptional activity and the MAPK/AP-1 signaling pathway in microglia following cerebral ischemia. Microglia-specific SENP3 knockdown reduces neuroinflammation, infarct volume, and neurological deficits after ischemic stroke.\",\n      \"method\": \"Co-immunoprecipitation; deSUMOylation assay; microglia-specific KD; cytokine measurement; infarct volume measurement\",\n      \"journal\": \"iScience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, substrate identification, KD with defined in vivo phenotype, single lab\",\n      \"pmids\": [\"37332598\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"SENP3 deSUMOylates RACK1, increasing RACK1 stability and its interaction with PKCβII, thereby promoting eIF4E phosphorylation and translation of oncogenes (Bcl2, Snail, Cyclin D1) in hepatocellular carcinoma. SENP3 also promotes CCL20 translation via the RACK1/eIF4E axis, facilitating tumor-associated macrophage infiltration and immune evasion.\",\n      \"method\": \"Co-immunoprecipitation; SUMOylation assay; RACK1 stability assay; eIF4E phosphorylation assay; liver-specific SENP3 KD; chemically induced HCC model\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, in vivo KD, substrate stability assay, translation readout, single lab\",\n      \"pmids\": [\"39755756\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"SENP3 promotes hypoxia-induced mitophagy (HIM) through deSUMOylation of FIS1. Under hypoxia, FIS1 SUMO2/3-ylation promotes interaction with Rab GAP protein TBC1D17, which suppresses HIM. SENP3-mediated FIS1 deSUMOylation counteracts TBC1D17-mediated suppression, promoting mitophagy and cell survival under hypoxia.\",\n      \"method\": \"Co-immunoprecipitation; FIS1 SUMOylation assay; TBC1D17 interaction assay; mitophagy assay; hypoxia model; siRNA knockdown; glioblastoma patient-derived cultures\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, SUMOylation assay with functional pathway analysis, KD, disease-relevant samples, single lab\",\n      \"pmids\": [\"39638786\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"SENP3 deSUMOylates CTH (Cystathionine Gamma-Lyase) at K361, facilitating its proteasome-dependent degradation. SUMO-3 modification of CTH at K361 promotes CTH protein stability. SENP3-mediated CTH degradation reduces H2S production, promoting macrophage ferroptosis and inflammation in abdominal aortic aneurysm. SENP3 expression is negatively regulated by the E3 ubiquitin ligase STUB1/CHIP.\",\n      \"method\": \"Co-immunoprecipitation; SUMOylation assay; site-directed mutagenesis (K361); CTH stability assay; myeloid-specific SENP3 KO; AAA mouse models (AngII and CaCl2); ferroptosis assay\",\n      \"journal\": \"Advanced science\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional KO in vivo, mutagenesis, substrate stability assay, single lab\",\n      \"pmids\": [\"40019399\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"SENP3 is a SUMO2/3-specific isopeptidase (cysteine protease) that is constitutively degraded via CHIP-mediated ubiquitination but is stabilized by ROS through Hsp90 recruitment and thiol modification, allowing it to redistribute from the nucleolus to the nucleoplasm and cytoplasm where it deSUMOylates a broad range of substrates—including p300, Drp1, NPM1, RbBP5, BECN1, BACH2, MKK7, IFI204, FIS1, IRF8, TIP60, Aurora A, Borealin, Fis1, CTH, and others—thereby regulating ribosome biogenesis, mitochondrial fission/mitophagy, HIF-1 transcription, immune signaling, chromatin modification, cell death, and differentiation; its activity is also regulated by cell-cycle-dependent phosphorylation by CDK1 (reversed by PP1α) and by mTOR-mediated phosphorylation that controls its NPM1-dependent nucleolar tethering.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"SENP3 is a SUMO2/3-specific cysteine isopeptidase that deconjugates SUMO from substrate proteins and is the human counterpart of the yeast protease Ulp1, whose crystallized covalent transition-state complex with the SUMO ortholog Smt3 defined the catalytic and SUMO-recognition determinants of this protease family [#0, #1]. The enzyme is constitutively short-lived: under basal conditions the co-chaperone E3 ligase CHIP (STUB1) ubiquitinates SENP3 for proteasomal degradation, while reactive oxygen species drive thiol modification of specific cysteines that recruits Hsp90, protecting SENP3 from CHIP and stabilizing the protein [#8, #9]. This redox switch makes SENP3 a ROS sensor that accumulates and redistributes from the nucleolus to the nucleoplasm and cytoplasm, with its nucleolar tethering controlled by NPM1 binding through an N-terminal domain that requires mTOR-mediated phosphorylation [#1, #8, #15]. In the nucleolus SENP3, together with NPM1, deSUMOylates NPM1 itself to drive 28S rRNA maturation and ribosome biogenesis [#4, #6]. Once stabilized and relocalized, SENP3 acts on a broad substrate range to control diverse processes: it deSUMOylates the HIF-1 co-activator p300 in a redox-tuned manner to set HIF-1 transcriptional output [#8, #12]; it deSUMOylates the fission GTPase Drp1 and the fission protein FIS1 to govern mitochondrial fragmentation, apoptotic cytochrome c release, and mitophagy [#13, #19, #33, #41]; it regulates chromatin through deSUMOylation of MLL-complex subunit RbBP5 and the methyltransferases SETD7, controlling H3K4 methylation, HOX/DLX3 transcription, and lineage differentiation [#14, #25]; and it modulates innate and adaptive immunity by deSUMOylating MKK7, IFI204, BACH2, and IRF8 to tune JNK/TLR4 signaling, STING-dependent interferon responses, Treg stability, and osteoclastogenesis [#21, #22, #28, #29]. Its catalytic activity is further gated through the cell cycle by inhibitory CDK1 phosphorylation reversed by PP1\\u03b1, linking SENP3 to mitotic chromosome stability and the p53-controlled G2 checkpoint [#23, #27].\",\n  \"teleology\": [\n    {\n      \"year\": 2000,\n      \"claim\": \"Established the catalytic basis of the SENP/Ulp protease family: a single enzyme both matures SUMO precursors and deconjugates SUMO from substrates, and the structural determinants of SUMO recognition were defined.\",\n      \"evidence\": \"Crystal structure of the Ulp1-Smt3 covalent transition-state complex with in vitro proteolytic assays and yeast genetics\",\n      \"pmids\": [\"10882122\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Yeast ortholog rather than human SENP3\", \"Did not address substrate selectivity in mammalian cells\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Identified human SENP3 (SMT3IP1) as a SUMO2/3-preferring isopeptidase and localized its nucleolar targeting to an N-terminal sequence, distinguishing it from ubiquitin/Nedd8 proteases.\",\n      \"evidence\": \"Yeast two-hybrid cloning, baculovirus expression, in vitro isopeptidase assays on RanGAP1 conjugates, and localization\",\n      \"pmids\": [\"11029585\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"In vitro substrate specificity may not reflect cellular targets\", \"Mechanism of nucleolar retention not defined\"]\n    },\n    {\n      \"year\": 2003,\n      \"claim\": \"Showed that subcellular localization, imposed by the non-catalytic N-domain, is a physiological constraint on which SUMO substrates the protease can access.\",\n      \"evidence\": \"Domain deletion, in vitro cleavage, in vivo conjugate profiling, and karyopherin interaction mapping in yeast Ulp1\",\n      \"pmids\": [\"12654900\", \"12471376\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Yeast tethering uses karyopherins/NPC; human SENP3 uses a distinct NPM1-based mechanism\", \"Direct mammalian carryover not demonstrated here\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Defined SENP3's first concrete cellular role: NPM1-associated deSUMOylation required for 28S rRNA maturation and ribosome biogenesis, with NPM1 also stabilizing the protein.\",\n      \"evidence\": \"Co-IP, in vitro desumoylation of NPM1-SUMO2, siRNA knockdown with rRNA processing readouts in mammalian and Xenopus systems\",\n      \"pmids\": [\"18259216\", \"19015314\", \"18948745\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Full set of nucleolar substrates beyond NPM1 not defined\", \"ARF/p53-independent contributions only partially resolved\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Identified SENP3 as a ROS-responsive enzyme that is stabilized and relocalized by oxidative stress, linking redox state to HIF-1 transcriptional output via p300 deSUMOylation.\",\n      \"evidence\": \"Cycloheximide chase, proteasome inhibition, immunofluorescence redistribution, co-IP, luciferase reporter, and xenograft\",\n      \"pmids\": [\"19680224\", \"22684029\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Which cysteines sense ROS clarified later (#12) but full redox proteomics absent\", \"Quantitative thresholds of ROS sensing not established\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Resolved the molecular basis of SENP3 turnover: CHIP drives constitutive ubiquitination/degradation, while ROS-induced thiol modification recruits Hsp90 to protect SENP3.\",\n      \"evidence\": \"Co-IP, in-cell ubiquitination assays, CHIP knockdown, Hsp90 inhibition, and redox thiol modification assays\",\n      \"pmids\": [\"20924358\", \"20181954\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How Hsp90 binding sterically blocks CHIP not structurally defined\", \"Other E3 ligases for SENP3 not excluded\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Connected SENP3 to mitochondrial fission and cell death by identifying Drp1 as a substrate whose deSUMOylation promotes mitochondrial recruitment, cytochrome c release, and caspase activation.\",\n      \"evidence\": \"OGD ischemia model, PERK/cathepsin B inhibition, co-IP, mitochondrial fractionation, and cytochrome c/caspase assays\",\n      \"pmids\": [\"23524851\", \"28262828\", \"34722538\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Stress-specific degradation pathways (PERK/cathepsin B vs CHIP) not unified\", \"Quantitative apoptotic threshold control unclear\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Demonstrated SENP3 controls chromatin and differentiation by deSUMOylating MLL-complex subunit RbBP5 and being targeted via NPM1/mTOR-regulated nucleolar tethering.\",\n      \"evidence\": \"Co-IP with MLL complexes, ChIP, in vivo SUMOylation, osteogenic differentiation assays, and mTOR inhibitor/domain-mapping experiments\",\n      \"pmids\": [\"24930734\", \"15\", \"25288641\", \"28344658\", \"31141694\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How mTOR phosphorylation toggles between rRNA and chromatin functions not resolved\", \"Breadth of chromatin substrates incomplete\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Established SENP3 as a redox-gated regulator of immunity, deSUMOylating MKK7, BACH2, and later IFI204 and IRF8 to control inflammatory signaling, Treg stability, interferon responses, and osteoclastogenesis.\",\n      \"evidence\": \"Lineage-specific conditional Senp3 knockouts (myeloid, Treg, DC), co-IP, SUMOylation assays, and in vivo inflammation/tumor models\",\n      \"pmids\": [\"29352108\", \"30089837\", \"33434504\", \"32049023\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Substrate selection across immune contexts not mechanistically unified\", \"How localization changes dictate immune-specific substrates unclear\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Showed SENP3 catalytic activity is gated through mitosis by inhibitory CDK1 phosphorylation (reversed by PP1\\u03b1) and by p53 during the G2 checkpoint, linking it to chromosome stability and APC/C control.\",\n      \"evidence\": \"Kinase/phosphatase identification, phospho-mutant analysis, co-IP, chromosome instability and G2 arrest assays\",\n      \"pmids\": [\"29438989\", \"32351703\", \"35869062\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Single-lab phospho-mutant studies\", \"Structural basis of phospho-regulation of catalysis not defined\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Extended SENP3's mitochondrial role to mitophagy and identified FIS1 K149 deSUMOylation, with structural evidence that the Brucella effectors NyxA/NyxB sequester SENP3 through a defined acidic patch.\",\n      \"evidence\": \"FIS1 K149R mutagenesis, mitophagy/hypoxia assays, and crystal structure of NyxB with localization/epistasis experiments\",\n      \"pmids\": [\"34994490\", \"39638786\", \"36609656\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How SENP3 distinguishes fission vs mitophagy outcomes on FIS1/Drp1 unclear\", \"Pathogen-driven sequestration physiological scope limited\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Expanded the substrate repertoire to stability control (RACK1, CTH, \\u03b2-catenin, Sp1, STAT3), showing SENP3 deSUMOylation can either stabilize or destabilize targets to influence translation, metabolism, and disease.\",\n      \"evidence\": \"Co-IP, SUMOylation/stability assays, site-directed mutagenesis, and conditional knockouts in HCC, AAA, and vascular remodeling models\",\n      \"pmids\": [\"39755756\", \"40019399\", \"34000626\", \"26511642\", \"27181202\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Why deSUMOylation stabilizes some substrates but destabilizes others not mechanistically generalized\", \"Most studies single-lab in disease-specific contexts\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How SENP3 selects among its very broad substrate set across compartments and stress states\\u2014and whether localization, phosphorylation, redox state, and partner availability constitute a unified targeting code\\u2014remains unresolved.\",\n      \"evidence\": \"No single study integrates the determinants of SENP3 substrate selectivity\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No systematic substrate-targeting model\", \"No structure of full-length human SENP3\", \"Compartment-specific interactomes incompletely mapped\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [0, 1, 4, 13, 14, 33]},\n      {\"term_id\": \"GO:0016787\", \"supporting_discovery_ids\": [0, 1, 4]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [8, 18, 19, 22, 41]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005730\", \"supporting_discovery_ids\": [1, 4, 6, 8, 15, 38]},\n      {\"term_id\": \"GO:0005654\", \"supporting_discovery_ids\": [8]},\n      {\"term_id\": \"GO:0005829\", \"supporting_discovery_ids\": [8, 22]},\n      {\"term_id\": \"GO:0005739\", \"supporting_discovery_ids\": [13, 19, 33, 41]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-8953854\", \"supporting_discovery_ids\": [4, 6]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [8, 9, 17]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [21, 22, 26, 28, 29]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [5, 23, 27, 35]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [14, 25, 37]},\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [13, 32]},\n      {\"term_id\": \"R-HSA-9612973\", \"supporting_discovery_ids\": [24, 33, 41]},\n      {\"term_id\": \"R-HSA-8953897\", \"supporting_discovery_ids\": [8, 9, 12]}\n    ],\n    \"complexes\": [\n      \"MLL1/MLL2 histone methyltransferase complex\",\n      \"chromosomal passenger complex\",\n      \"rixosome\"\n    ],\n    \"partners\": [\n      \"NPM1\",\n      \"HSP90\",\n      \"STUB1\",\n      \"Drp1\",\n      \"FIS1\",\n      \"RbBP5\",\n      \"p300\",\n      \"MKK7\"\n    ],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":6,"faith_total":6,"faith_pct":100.0}}