{"gene":"DAPK3","run_date":"2026-06-09T22:57:19","timeline":{"discoveries":[{"year":2021,"finding":"DAPK3 coordinates post-translational modification of STING: in unstimulated cells DAPK3 inhibits STING K48-linked poly-ubiquitination and proteasome-mediated degradation; after cGAMP stimulation DAPK3 is required for STING K63-linked poly-ubiquitination and STING–TBK1 interaction. DAPK3 also phosphorylates the E3 ligase LMO7, which is critical for LMO7–STING interaction and STING K63-linked poly-ubiquitination.","method":"Loss-of-function screen, phospho-proteomics (mass spectrometry), co-immunoprecipitation, ubiquitination assays, kinase activity assays","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — multiple orthogonal methods (phospho-proteomics, Co-IP, ubiquitination assays, kinase assays) in a single rigorous study with in vivo validation","pmids":["33767426"],"is_preprint":false},{"year":2016,"finding":"DAPK3 directly phosphorylates Beclin 1 at Ser-90 to promote autophagy; PP2A (B55α subunit) associates with Beclin 1 and dephosphorylates this site, with starvation causing PP2A dissociation and allowing DAPK3-mediated phosphorylation.","method":"In vitro kinase assay, co-immunoprecipitation, phospho-mutant (S90A) functional assay, okadaic acid treatment, mouse starvation model","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 / Moderate — direct in vitro kinase assay plus Co-IP and phospho-mutant rescue, single lab with multiple orthogonal methods","pmids":["26994142"],"is_preprint":false},{"year":2020,"finding":"DAPK3 directly phosphorylates ULK1 at Ser-556, increasing ULK1 activity, facilitating ULK1 complex formation, VPS34 complex activation, and autophagy induction upon starvation.","method":"Mass spectrometry, in vitro kinase assay, immunoprecipitation, phospho-mutant functional analysis","journal":"Cell death and differentiation","confidence":"High","confidence_rationale":"Tier 1 / Moderate — in vitro kinase assay plus MS identification plus Co-IP, single lab, multiple orthogonal methods","pmids":["33037394"],"is_preprint":false},{"year":2011,"finding":"Cancer-associated DAPK3 point mutations (T112M, D161N, P216S) decrease or abolish kinase activity, dominantly inhibit wild-type DAPK3 function, and impair regulation of cell cycle and cell survival; reconstitution of DAPK3-P216S lung cancer cells with wild-type DAPK3 decreased cellular aggregation and increased chemotherapy sensitivity.","method":"Kinase activity assays, co-expression dominant-negative analysis, cell viability/proliferation assays, reconstitution in NSCLC cell line","journal":"Cancer research","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — kinase assays, dominant-negative co-expression, and reconstitution in endogenous mutant cell line; multiple orthogonal functional assays","pmids":["21487036"],"is_preprint":false},{"year":2009,"finding":"ZIPK/DAPK3 phosphorylates cardiac myosin regulatory light chain (RLC) at Ser-15 in vitro and in ventricular cardiac myocytes; siRNA knockdown of ZIPK significantly decreased RLC Ser-15 phosphorylation in cardiac myocytes.","method":"In vitro kinase assay with purified ZIPK on heart homogenates, mass spectrometry substrate identification, siRNA knockdown with biochemical readout","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 / Moderate — in vitro kinase assay with substrate identification and siRNA knockdown validation; multiple orthogonal approaches in single study","pmids":["20038585"],"is_preprint":false},{"year":2019,"finding":"ZIPK/DAPK3 phosphorylates myosin light chain (MLC) and is required for endothelial cell contraction and paracellular permeability; endothelium-specific deletion of Zipk caused embryonic lethality in mice, and induced adult deletion reduced ischemia-reperfusion-induced blood-brain barrier dysfunction and neuronal injury.","method":"Pharmacological inhibition, siRNA knockdown, conditional knockout mice (endothelium-specific and tamoxifen-inducible), in vivo stroke model (MCAO)","journal":"FASEB journal","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — genetic knockout (endothelium-specific and inducible), pharmacological inhibition, in vivo stroke model; multiple orthogonal approaches","pmids":["31180722"],"is_preprint":false},{"year":2013,"finding":"DAPK3/ZIPK inhibits DAPK1 and ZIPK in an ATP-competitive manner; selective inhibitor HS38 decreased RLC20 phosphorylation in cells and reduced contractile force in smooth muscle via decreased RLC20 and MYPT1 phosphorylation.","method":"Biochemical kinase inhibition assay (FLECS), cellular RLC20 phosphorylation assay, ex vivo smooth muscle contractility assay, close structural analogue control (HS43)","journal":"ACS chemical biology","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — ATP-competitive inhibition defined biochemically, validated in cells and ex vivo tissue with structural analogue negative control","pmids":["24070067"],"is_preprint":false},{"year":2018,"finding":"A co-crystal structure of DAPK3 with lead inhibitor HS38 was determined; Pim kinases directly phosphorylate smooth muscle targets, and dual Pim/DAPK3 inhibition but not selective DAPK3 inhibition alone significantly reduces contractility; HS56 (dual Pim/DAPK3 inhibitor) decreased blood pressure in spontaneously hypertensive mice.","method":"Co-crystal structure, in vitro kinase assays, ex vivo smooth muscle contractility assays, in vivo hypertension model","journal":"Cell chemical biology","confidence":"High","confidence_rationale":"Tier 1 / Strong — crystal structure plus in vitro assays plus in vivo validation; multiple orthogonal methods","pmids":["30033129"],"is_preprint":false},{"year":2008,"finding":"Par-4 (PAWR) co-localizes with ZIPK on actin filaments in vascular smooth muscle; Par-4 decoy peptide inhibits ZIPK targeting to actin filaments upon PGF-2α stimulation, and Par-4 knockdown reduces contractility and myosin light chain/MYPT phosphorylation, indicating Par-4 facilitates ZIPK-mediated contraction by targeting it to its substrates.","method":"Immunofluorescence co-localization, cell-permeant decoy peptide, antisense morpholino knockdown, contractility assay, phosphorylation biochemistry","journal":"Journal of cellular and molecular medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-localization plus functional knockdown with multiple readouts; single lab","pmids":["18505470"],"is_preprint":false},{"year":2007,"finding":"Human ZIPK localizes to the cytoplasm and induces membrane blebbing, while murine ZIPK localizes to the nucleus (PML bodies); this species difference is linked to absence of a conserved phosphorylation site (T299) in murine ZIPK. Human ZIPK fails to bind PAR-4, while rat ZIPK binds PAR-4 efficiently, and co-expression of PAR-4 with rat ZIPK causes nuclear-to-cytoplasm translocation and blebbing.","method":"Sequence alignment, site-directed mutagenesis, ectopic expression with fluorescence microscopy, co-immunoprecipitation (PAR-4 interaction), membrane blebbing assay","journal":"PLoS genetics","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — mutagenesis of phosphorylation site, Co-IP for binding partner, multiple orthogonal functional and localization assays","pmids":["17953487"],"is_preprint":false},{"year":2010,"finding":"Phosphorylation of T299 in human ZIPK controls its nuclear import by masking an adjacent nuclear localization sequence; constitutively active Rho promotes cytoplasmic retention of a human ZIPK mutant that would otherwise be nuclear; endogenous hZIPK shuttles between cytoplasm and nucleus in a leptomycin B-sensitive manner dependent on T299 dephosphorylation.","method":"Mutational analysis, constitutively active Rho expression, leptomycin B nuclear export inhibition, subcellular fractionation/imaging","journal":"Cellular signalling","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — mutational analysis plus pharmacological nuclear export block plus Rho manipulation; single lab, multiple approaches","pmids":["20854903"],"is_preprint":false},{"year":2011,"finding":"ZIPK interacts with Nemo-like kinase (NLK) and regulates NLK-mediated repression of canonical Wnt/β-catenin signaling; ZIPK affects NLK–TCF4 complex formation; siRNA knockdown of ZIPK reduces β-catenin/TCF-mediated gene expression and cell growth in colon carcinoma cells.","method":"Co-immunoprecipitation (NLK-ZIPK interaction), siRNA knockdown, reporter gene assay (β-catenin/TCF), cell growth assay","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — Co-IP plus siRNA with functional reporter readout; single lab","pmids":["21454679"],"is_preprint":false},{"year":2014,"finding":"ZIPK depletion by shRNA impairs VSMC migration and substantially decreases VSMC-mediated collagen gel contraction; NMIIA and NMIIB (nonmuscle myosin II isoforms) are downstream effectors of ZIPK in controlling VSMC motility and contractility.","method":"shRNA knockdown, 3D collagen matrix migration assay, collagen gel contraction assay","journal":"American journal of physiology. Heart and circulatory physiology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — shRNA knockdown with two orthogonal functional assays; single lab","pmids":["24633547"],"is_preprint":false},{"year":2014,"finding":"DAPK3 loss in 3D acinar morphogenesis model enlarges acinar size via accelerated proliferation; epistasis analysis shows simultaneous knockdown of RAPTOR (mTORC1 component) reverses enlarged acinar size, placing DAPK3 upstream of mTORC1 as a suppressor. Constitutive DAPK3 knockout mice are embryonic lethal.","method":"Lentiviral shRNA knockdown, 3D morphogenesis model, rapamycin sensitivity assay, RAPTOR knockdown epistasis, constitutive knockout mouse generation","journal":"Molecular cancer research : MCR","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — epistasis via double knockdown plus in vivo knockout; single lab, multiple orthogonal approaches","pmids":["25304685"],"is_preprint":false},{"year":2019,"finding":"DAPK3 silencing blocks autophagosome-lysosome fusion by reducing assembly of the STX17-SNAP29-VAMP8 SNARE complex via mediation of SNAP29, impeding autophagy in high-glucose-treated trophoblast cells.","method":"siRNA knockdown, autophagy flux assay, SNARE complex co-immunoprecipitation","journal":"Molecular and cellular endocrinology","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — siRNA knockdown with Co-IP of SNARE complex and autophagy flux readout; single lab","pmids":["31811899"],"is_preprint":false},{"year":2020,"finding":"DAPK3 phosphorylates cancer-associated mutations (T112M, D161N, P216S) result in reduced MRLC phosphorylation at the contractile ring during cytokinesis, leading to increased multinucleated cells and cytokinesis failure.","method":"EGFP-DAPK3 mutant expression, cytokinesis rate quantification, phospho-MRLC immunofluorescence at contractile ring","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — expression of defined mutants with cellular phenotype and phosphorylation readout; single lab","pmids":["33032825"],"is_preprint":false},{"year":2020,"finding":"DAPK3 is recruited to RNA polymerase II in a BCR-activation-dependent manner and mediates histone H3 Thr-6 and Thr-11 phosphorylation at immediate early gene loci (EGR1, DUSP2); DAPK3 inhibition impacts mRNA processing rather than transcription initiation per se.","method":"ChIP (DAPK3 recruitment to Pol II), DAPK inhibitor treatment, ibrutinib comparison, mRNA and histone phosphorylation assays in CLL cells","journal":"Molecular oncology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP recruitment assay plus pharmacological inhibition with histone phosphorylation readout; single lab","pmids":["32306542"],"is_preprint":false},{"year":2022,"finding":"DAPK3 modulates UBE3A E3 ligase activity by interfering with PKA phosphorylation of UBE3A, thereby regulating PBRM1 protein stability in renal cancer; RBPJ acts upstream of DAPK3 in this axis (RBPJ/DAPK3/UBE3A/PBRM1/p21).","method":"Mass spectrometry (PBRM1 interactome), co-immunoprecipitation, ubiquitination assay, functional epistasis in RCC cells","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP, ubiquitination assay, and MS-based interactome; single lab","pmids":["35368029"],"is_preprint":false},{"year":2015,"finding":"DAPK3 is targeted by miR-17/20a; DAPK3 acts as a p53-activating kinase; loss of DAPK3 via miR-17/20a targeting leads to p53-dependent transcriptional de-repression of the oncomiRs, and DAPK3 is required to prevent genome instability upon miR-17/20a depletion.","method":"miRNA target validation, DAPK3 knockdown/overexpression, p53 reporter assay, genome instability assay","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — miRNA targeting validated, DAPK3 KD/OE with p53 pathway readout; single lab","pmids":["26117336"],"is_preprint":false},{"year":2023,"finding":"CSFV NS5A protein activates autophagy via the PP2A-DAPK3-Beclin 1 axis: NS5A interacts with PPP2R1A and DAPK3, causing PP2A to dissociate from Beclin 1 and associate with DAPK3; PP2A dephosphorylates DAPK3 to activate its kinase activity, and activated DAPK3 phosphorylates Beclin 1.","method":"Co-immunoprecipitation, kinase activity assay, autophagy flux assay in viral infection context","journal":"Journal of virology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP interaction mapping plus kinase activity readout; single lab, viral infection context","pmids":["38038430"],"is_preprint":false},{"year":2022,"finding":"ZIPK directly interacts with STAT5A in the nucleus under high-glucose conditions; ZIPK is essential for high-glucose-induced p53 expression and ROS accumulation, and ZIPK activity is required upstream of STAT5A-mediated NOS2/p53 induction.","method":"Co-immunoprecipitation (ZIPK-STAT5A nuclear interaction), siRNA knockdown, overexpression, pharmacological inhibitor (TC-DAPK6) in diabetic rat model","journal":"Acta biochimica et biophysica Sinica","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single Co-IP plus siRNA/OE; single lab, no in vitro kinase assay for direct phosphorylation","pmids":["39030705"],"is_preprint":false},{"year":2022,"finding":"ZIPK inhibits HIV-1 replication by suppressing LTR-driven gene expression; HIV-1 Nef interacts with ZIPK and induces its proteasomal degradation, and ZIPK phosphorylates STAT3 at Ser-727 to inhibit its activity, which Nef counteracts by degrading ZIPK.","method":"ZIPK overexpression/knockdown with LTR reporter assay, Co-immunoprecipitation (Nef-ZIPK), proteasome inhibitor rescue, STAT3 Ser-727 phosphorylation assay","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP of Nef-ZIPK, proteasome inhibitor rescue, LTR reporter and phospho-STAT3 assays; single lab","pmids":["35961135"],"is_preprint":false},{"year":2021,"finding":"ZIPK is required for TNF-α-induced ICAM-1 and VCAM-1 expression and monocyte adhesion in endothelial cells; TNF-α upregulates ZIPK transcription, and ZIPK functions upstream of NF-κB activation (TNF-α/ZIPK/NF-κB axis).","method":"ZIPK-specific inhibitor (Tc-DAPK6), siRNA knockdown, NF-κB activation assay, adhesion molecule expression assay, monocyte adhesion assay","journal":"Acta biochimica et biophysica Sinica","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — pharmacological inhibition plus siRNA knockdown with pathway and functional readouts; single lab","pmids":["33710297"],"is_preprint":false},{"year":2025,"finding":"ZIPK phosphorylates smooth muscle myosin regulatory light chain (MRLC) sequentially: first at Ser-19, then at Thr-18; phosphorylation of SMM is slower than isolated MRLC because the C-terminal domain of ZIPK interacts with the myosin heavy chain, causing competitive binding that suppresses MRLC phosphorylation in the intact SMM context.","method":"Quantitative mass spectrometry on phosphomimic/unphosphorylatable MRLC mutants, co-sedimentation assay (ZIPK-SMM heavy chain interaction), kinetic modeling","journal":"bioRxiv","confidence":"Medium","confidence_rationale":"Tier 1 / Weak — in vitro kinase assay with mutant analysis and co-sedimentation for binding; preprint, single lab","pmids":["bio_10.1101_2025.08.15.670483"],"is_preprint":true},{"year":2026,"finding":"UNC5B promotes post-stroke microglial pyroptosis via DAPK3; DAPK3 interacts with and phosphorylates mevalonate kinase (MVK), and disruption of the DAPK3-MVK complex by UNC5B knockdown or DAPK3 inhibition suppresses pyroptosis.","method":"Co-immunoprecipitation (DAPK3-MVK), UNC5B/MVK knockdown, DAPK3 pharmacological inhibition, pyroptosis assays, photothrombosis stroke model","journal":"Neurochemical research","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — Co-IP of DAPK3-MVK complex, genetic and pharmacological intervention with pyroptosis readout; single lab, new interaction","pmids":["41498970"],"is_preprint":false},{"year":2024,"finding":"ZIPK inhibition suppresses focal adhesion kinase (FAK-pY397) phosphorylation and promotes FAK nuclear translocation in vascular smooth muscle cells; ZIPK regulates CDC14A levels, and CDC14A co-localizes with both ZIPK and FAK by proximity ligation assay; CDC14A silencing increases FAK phosphorylation, suggesting ZIPK acts through a ZIPK-CDC14A partnership to control FAK during VSMC migration.","method":"Pharmacological inhibition (HS38), siRNA knockdown, proximity ligation assay (PLA), immunofluorescence, phospho-protein western blotting","journal":"bioRxiv","confidence":"Low","confidence_rationale":"Tier 3 / Weak — PLA and siRNA in a preprint; no direct kinase assay for ZIPK→CDC14A phosphorylation; single lab","pmids":["38496458"],"is_preprint":true},{"year":2024,"finding":"DAPK3 promotes cellular senescence in brain endothelial cells by phosphorylating and inactivating PGC1α via the AKT pathway, resulting in decreased expression of mitochondrial metabolism genes (ATP5G1, BDNF, COX5A).","method":"siRNA knockdown, dominant-negative mutant (DAPK3-P216S), senescence assays (SA-β-gal, tube formation, proliferation), phospho-PGC1α western blot","journal":"The journals of gerontology. Series A","confidence":"Low","confidence_rationale":"Tier 3 / Weak — siRNA/dominant-negative with cellular phenotype and phosphorylation readout, but no direct in vitro kinase assay for DAPK3→PGC1α; single lab","pmids":["38563090"],"is_preprint":false},{"year":2026,"finding":"Insig1 directly interacts with DAPK3 and stabilizes DAPK3 protein levels; conditional tubular Insig1 knockout ameliorates AKI, and pharmacological DAPK3 inhibition (HS148) recapitulates this renoprotective effect.","method":"Proteomics (Insig1 interactome identification of Dapk3), conditional knockout mice, siRNA knockdown, in vitro cisplatin injury model, pharmacological inhibition in vivo","journal":"Journal of advanced research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — MS-identified interaction, conditional knockout, pharmacological inhibition in vivo; single lab","pmids":["42144057"],"is_preprint":false}],"current_model":"DAPK3/ZIPK is a Ca²⁺-independent serine/threonine kinase that directly phosphorylates multiple substrates—including myosin regulatory light chain (Ser-19 then Thr-18 sequentially), Beclin 1 (Ser-90), ULK1 (Ser-556), STING (coordinating its K48- and K63-linked ubiquitination via LMO7 phosphorylation), histone H3 (Thr-6/Thr-11), and STAT3 (Ser-727)—to regulate smooth muscle/non-muscle contractility, autophagy initiation and flux, innate immune STING pathway activation, cytokinesis, and transcriptional programs; its subcellular localization (cytoplasmic in humans, nuclear in rodents) is controlled by phosphorylation of T299 adjacent to its NLS, and its activity and stability are modulated by PP2A dephosphorylation, Par-4/PAWR targeting to actin filaments, Insig1-mediated stabilization, and Nef-induced proteasomal degradation."},"narrative":{"mechanistic_narrative":"DAPK3 (ZIPK) is a Ca²⁺-independent serine/threonine kinase that converges on the actomyosin contractile machinery: it directly phosphorylates myosin regulatory light chain—sequentially at Ser-19 then Thr-18 in smooth muscle myosin, and at Ser-15 in cardiac myocytes—to drive smooth muscle, cardiac, non-muscle, and endothelial contractility, and is required for endothelial barrier function in vivo [PMID:20038585, PMID:31180722, PMID:bio_10.1101_2025.08.15.670483]. Substrate targeting and force generation depend on Par-4/PAWR, which localizes ZIPK to actin filaments [PMID:18505470], and additional smooth muscle output flows through nonmuscle myosin II isoforms (NMIIA/NMIIB) controlling vascular smooth muscle migration and contraction [PMID:24633547]; ATP-competitive inhibitors that block ZIPK reduce RLC and MYPT1 phosphorylation and contractile force, and dual Pim/DAPK3 inhibition lowers blood pressure in hypertensive mice [PMID:24070067, PMID:30033129]. Beyond contractility, DAPK3 promotes autophagy as an activating kinase for Beclin 1 (Ser-90) and ULK1 (Ser-556) and supports autophagosome–lysosome fusion through the STX17–SNAP29–VAMP8 SNARE complex; its kinase activity toward Beclin 1 is gated by PP2A, which both dephosphorylates the Beclin 1 site and dephosphorylates DAPK3 itself to activate it [PMID:26994142, PMID:33037394, PMID:31811899, PMID:38038430]. In innate immunity DAPK3 coordinates STING regulation, restraining K48-linked degradative ubiquitination at rest and enabling cGAMP-induced K63-linked ubiquitination and STING–TBK1 association in part by phosphorylating the E3 ligase LMO7 [PMID:33767426]. Its localization is species-dependent—cytoplasmic in human cells and nuclear in rodents—governed by phosphorylation of T299 adjacent to an NLS, with T299 dephosphorylation permitting nuclear import and Rho signaling promoting cytoplasmic retention [PMID:17953487, PMID:20854903]. Cancer-associated mutations (T112M, D161N, P216S) abolish kinase activity, act dominant-negatively, and cause cytokinesis failure and multinucleation through reduced MRLC phosphorylation at the contractile ring [PMID:21487036, PMID:33032825].","teleology":[{"year":2007,"claim":"Established that ZIPK subcellular distribution differs between species and is controlled by a phosphosite-bearing region, framing where the kinase acts and how its compartmentalization is encoded.","evidence":"Sequence alignment, T299 mutagenesis, ectopic expression imaging, and PAR-4 Co-IP comparing human, murine, and rat ZIPK","pmids":["17953487"],"confidence":"High","gaps":["Functional consequence of human cytoplasmic vs rodent nuclear localization not resolved in physiology","Did not define the kinase regulating T299 in vivo"]},{"year":2008,"claim":"Showed how ZIPK reaches its contractile substrates by demonstrating Par-4/PAWR targets it to actin filaments, answering how a soluble kinase couples to the myofilament.","evidence":"Immunofluorescence co-localization, decoy peptide, antisense knockdown, and contractility/phosphorylation assays in vascular smooth muscle","pmids":["18505470"],"confidence":"Medium","gaps":["Structural basis of Par-4–ZIPK–actin interaction not defined","Single lab; reciprocal validation limited"]},{"year":2009,"claim":"Identified cardiac RLC Ser-15 as a direct ZIPK substrate, extending the contractile role of the kinase beyond smooth muscle into cardiac myocytes.","evidence":"In vitro kinase assay on heart homogenates, MS substrate identification, siRNA knockdown in cardiac myocytes","pmids":["20038585"],"confidence":"High","gaps":["Physiological impact on cardiac function not tested","Upstream activation of ZIPK in heart not addressed"]},{"year":2010,"claim":"Defined the molecular switch for ZIPK nucleocytoplasmic shuttling, showing T299 phosphorylation masks an adjacent NLS and Rho signaling biases cytoplasmic retention.","evidence":"Mutational analysis, constitutively active Rho, leptomycin B export block, fractionation/imaging","pmids":["20854903"],"confidence":"Medium","gaps":["Identity of the T299 kinase/phosphatase not established","Nuclear vs cytoplasmic substrate repertoire not distinguished"]},{"year":2011,"claim":"Linked DAPK3 loss-of-function to cancer by showing recurrent mutations abolish kinase activity, act dominant-negatively, and impair cell cycle/survival control.","evidence":"Kinase assays, dominant-negative co-expression, viability assays, and WT reconstitution in an NSCLC mutant line","pmids":["21487036"],"confidence":"High","gaps":["Substrate(s) responsible for the growth phenotype not defined here","Mechanism of dominant-negativity not structurally explained"]},{"year":2011,"claim":"Connected ZIPK to canonical Wnt/β-catenin signaling via NLK, indicating a transcriptional regulatory role distinct from contractility.","evidence":"Co-IP of NLK–ZIPK, siRNA knockdown, β-catenin/TCF reporter and growth assays in colon carcinoma cells","pmids":["21454679"],"confidence":"Medium","gaps":["Whether ZIPK phosphorylates NLK or TCF4 not shown","Single Co-IP without reciprocal/in vitro confirmation"]},{"year":2013,"claim":"Provided a chemical-biology toolkit (HS38) defining ZIPK as an ATP-competitive target whose inhibition lowers RLC20/MYPT1 phosphorylation and contractile force.","evidence":"Biochemical inhibition (FLECS), cellular phosphorylation, ex vivo smooth muscle contractility, structural analogue control","pmids":["24070067"],"confidence":"High","gaps":["Selectivity over related kinases incomplete at this stage","In vivo efficacy not yet tested"]},{"year":2014,"claim":"Resolved downstream effectors of ZIPK in vascular smooth muscle motility, identifying NMIIA/NMIIB as mediators of migration and gel contraction.","evidence":"shRNA knockdown with 3D migration and collagen gel contraction assays","pmids":["24633547"],"confidence":"Medium","gaps":["Direct phosphorylation of NMII by ZIPK not demonstrated","Single lab"]},{"year":2014,"claim":"Placed DAPK3 upstream of mTORC1 as a suppressor of proliferation, establishing a growth-control axis and the essentiality of the gene in development.","evidence":"shRNA in 3D acinar morphogenesis, RAPTOR epistasis, rapamycin sensitivity, constitutive knockout mice","pmids":["25304685"],"confidence":"Medium","gaps":["Molecular link between DAPK3 and mTORC1 not defined","Embryonic lethality cause not pinpointed"]},{"year":2015,"claim":"Defined DAPK3 as a p53-activating kinase under miR-17/20a control that guards genome stability, expanding its tumor-suppressive role.","evidence":"miRNA target validation, DAPK3 KD/OE, p53 reporter, genome instability assay","pmids":["26117336"],"confidence":"Medium","gaps":["Direct DAPK3 substrate in the p53 axis not identified","Single lab"]},{"year":2016,"claim":"Identified Beclin 1 Ser-90 as a direct DAPK3 substrate gated by PP2A, providing a mechanistic entry point for DAPK3 into autophagy induction.","evidence":"In vitro kinase assay, Co-IP, S90A phospho-mutant rescue, okadaic acid, mouse starvation model","pmids":["26994142"],"confidence":"High","gaps":["Upstream signal activating DAPK3 toward Beclin 1 not fully defined","Interplay with other autophagy regulators not mapped"]},{"year":2018,"claim":"Delivered a co-crystal structure and demonstrated that dual Pim/DAPK3 inhibition, not DAPK3 alone, controls contractility and lowers blood pressure, refining therapeutic targeting.","evidence":"Co-crystal of DAPK3–HS38, in vitro kinase assays, ex vivo contractility, hypertensive mouse model","pmids":["30033129"],"confidence":"High","gaps":["Relative contribution of Pim vs DAPK3 in vivo not fully separated","Off-target effects of dual inhibitors not excluded"]},{"year":2019,"claim":"Demonstrated ZIPK's physiological role in endothelial contractility and barrier integrity, with genetic deletion causing embryonic lethality and protecting against stroke-induced BBB dysfunction.","evidence":"Inhibition, siRNA, endothelium-specific and inducible KO mice, MCAO stroke model","pmids":["31180722"],"confidence":"High","gaps":["Endothelial substrate beyond MLC not specified","Mechanism of embryonic lethality not dissected"]},{"year":2019,"claim":"Extended DAPK3's autophagy role to flux by showing it supports STX17–SNAP29–VAMP8 SNARE assembly for autophagosome–lysosome fusion.","evidence":"siRNA knockdown, autophagy flux assay, SNARE complex Co-IP in trophoblast cells","pmids":["31811899"],"confidence":"Medium","gaps":["Whether SNAP29 is a direct phospho-substrate not shown","Single lab/cell type"]},{"year":2020,"claim":"Identified ULK1 Ser-556 as a direct DAPK3 substrate, positioning the kinase at the initiation step of autophagy upstream of VPS34.","evidence":"MS, in vitro kinase assay, Co-IP, phospho-mutant functional analysis","pmids":["33037394"],"confidence":"High","gaps":["Coordination with Beclin 1 Ser-90 phosphorylation not integrated","Upstream control of DAPK3 in starvation not fully defined"]},{"year":2020,"claim":"Established a nuclear, transcription-associated role: DAPK3 is recruited to Pol II upon BCR activation and phosphorylates histone H3 Thr-6/Thr-11 at immediate early genes, affecting mRNA processing.","evidence":"ChIP recruitment, DAPK inhibition, ibrutinib comparison, histone phospho and mRNA assays in CLL cells","pmids":["32306542"],"confidence":"Medium","gaps":["Mechanism of Pol II recruitment unknown","Direct histone phosphorylation in vitro not shown here"]},{"year":2020,"claim":"Connected cancer-associated DAPK3 mutations mechanistically to cytokinesis failure via reduced contractile-ring MRLC phosphorylation, explaining a genome-destabilizing phenotype.","evidence":"EGFP-DAPK3 mutant expression, cytokinesis quantification, phospho-MRLC immunofluorescence at the contractile ring","pmids":["33032825"],"confidence":"Medium","gaps":["Spatiotemporal regulation of DAPK3 at the ring not defined","Single lab"]},{"year":2021,"claim":"Defined DAPK3 as a coordinator of STING ubiquitination state, restraining K48 degradation at rest and enabling K63 ubiquitination and STING–TBK1 coupling after cGAMP via LMO7 phosphorylation.","evidence":"Loss-of-function screen, phospho-proteomics, Co-IP, ubiquitination and kinase assays with in vivo validation","pmids":["33767426"],"confidence":"High","gaps":["Direct STING phosphosite vs LMO7-mediated effect not fully separated","How DAPK3 senses stimulation state not defined"]},{"year":2021,"claim":"Placed ZIPK upstream of NF-κB in endothelial inflammation, driving TNF-α-induced adhesion molecule expression and monocyte adhesion.","evidence":"Tc-DAPK6 inhibition, siRNA, NF-κB activation, adhesion molecule and monocyte adhesion assays","pmids":["33710297"],"confidence":"Medium","gaps":["Direct substrate in the NF-κB pathway not identified","Single lab"]},{"year":2022,"claim":"Showed ZIPK suppresses HIV-1 by inhibiting LTR-driven expression and phosphorylating STAT3 Ser-727, with viral Nef counteracting via ZIPK proteasomal degradation, revealing a host-restriction role and a degradation regulatory input.","evidence":"LTR reporter, Nef–ZIPK Co-IP, proteasome inhibitor rescue, phospho-STAT3 Ser-727 assay","pmids":["35961135"],"confidence":"Medium","gaps":["Direct in vitro STAT3 phosphorylation not shown","E3 ligase mediating Nef-induced degradation unknown"]},{"year":2022,"claim":"Implicated DAPK3 in renal cancer protein homeostasis by modulating UBE3A ligase activity and PBRM1 stability downstream of RBPJ.","evidence":"PBRM1 interactome MS, Co-IP, ubiquitination assay, epistasis in RCC cells","pmids":["35368029"],"confidence":"Medium","gaps":["Whether DAPK3 phosphorylates UBE3A directly not established","Single lab"]},{"year":2022,"claim":"Reported a nuclear ZIPK–STAT5A interaction required for high-glucose-induced p53 and ROS, extending ZIPK into diabetic vascular signaling.","evidence":"Co-IP, siRNA, overexpression, TC-DAPK6 in a diabetic rat model","pmids":["39030705"],"confidence":"Low","gaps":["No in vitro kinase assay for direct STAT5A phosphorylation","Single Co-IP without reciprocal validation"]},{"year":2023,"claim":"Integrated PP2A regulation by showing a viral protein (CSFV NS5A) redirects PP2A to dephosphorylate and activate DAPK3, which then phosphorylates Beclin 1 to induce autophagy.","evidence":"Co-IP interaction mapping, kinase activity assay, autophagy flux in viral infection","pmids":["38038430"],"confidence":"Medium","gaps":["DAPK3 dephosphosite targeted by PP2A not mapped","Generality beyond viral context untested"]},{"year":2024,"claim":"Linked ZIPK to FAK signaling in VSMC migration through a ZIPK–CDC14A partnership controlling FAK-pY397 and nuclear translocation.","evidence":"HS38 inhibition, siRNA, proximity ligation assay, immunofluorescence, phospho-westerns (preprint)","pmids":["38496458"],"confidence":"Low","gaps":["No direct kinase assay for ZIPK→CDC14A phosphorylation","Preprint, single lab"]},{"year":2024,"claim":"Implicated DAPK3 in endothelial senescence via PGC1α inactivation and impaired mitochondrial gene expression.","evidence":"siRNA, DAPK3-P216S dominant-negative, senescence assays, phospho-PGC1α western (Series A)","pmids":["38563090"],"confidence":"Low","gaps":["No in vitro kinase assay for DAPK3→PGC1α","AKT involvement correlative"]},{"year":2026,"claim":"Identified Insig1 as a direct DAPK3 interactor that stabilizes the kinase, with both implicated in acute kidney injury, revealing a stability-based regulatory input with therapeutic relevance.","evidence":"Insig1 interactome proteomics, conditional KO mice, siRNA, cisplatin injury, HS148 inhibition in vivo","pmids":["42144057"],"confidence":"Medium","gaps":["Mechanism of Insig1-mediated stabilization not defined","DAPK3 substrate driving AKI not identified"]},{"year":2026,"claim":"Connected DAPK3 to microglial pyroptosis after stroke through a UNC5B-promoted DAPK3–MVK complex and MVK phosphorylation.","evidence":"DAPK3–MVK Co-IP, UNC5B/MVK knockdown, DAPK3 inhibition, pyroptosis assays, photothrombosis model","pmids":["41498970"],"confidence":"Medium","gaps":["MVK phosphosite not mapped","New interaction, single lab"]},{"year":null,"claim":"How DAPK3's distinct activities—contractility, autophagy, innate immunity, and transcription—are partitioned by localization, stability inputs (PP2A, Insig1, Nef), and substrate selection within a single cell remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unified model linking T299-controlled localization to substrate choice","Upstream activators in each pathway incompletely defined","Direct kinase relationships for several reported substrates unconfirmed"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[0,1,2,4,15,23]},{"term_id":"GO:0016740","term_label":"transferase 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The function in both reorganization of actin cytoskeleton and focal adhesion dissolution is modulated by RhoD. Positively regulates canonical Wnt/beta-catenin signaling through interaction with NLK and TCF7L2. Phosphorylates RPL13A on 'Ser-77' upon interferon-gamma activation which is causing RPL13A release from the ribosome, RPL13A association with the GAIT complex and its subsequent involvement in transcript-selective translation inhibition. Enhances transcription from AR-responsive promoters in a hormone- and kinase-dependent manner. Involved in regulation of cell cycle progression and cell proliferation. 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RPL13A","url":"https://www.omim.org/entry/619225"},{"mim_id":"616567","title":"DEATH-ASSOCIATED PROTEIN KINASE 2; DAPK2","url":"https://www.omim.org/entry/616567"},{"mim_id":"603289","title":"DEATH-ASSOCIATED PROTEIN KINASE 3; DAPK3","url":"https://www.omim.org/entry/603289"},{"mim_id":"601422","title":"LEUCINE ZIPPER PROTEIN 1; LUZP1","url":"https://www.omim.org/entry/601422"},{"mim_id":"600831","title":"DEATH-ASSOCIATED PROTEIN KINASE 1; DAPK1","url":"https://www.omim.org/entry/600831"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoplasm","reliability":"Supported"},{"location":"Cytosol","reliability":"Supported"},{"location":"Vesicles","reliability":"Additional"},{"location":"Primary cilium","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in 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DAPK3 also phosphorylates the E3 ligase LMO7, which is critical for LMO7–STING interaction and STING K63-linked poly-ubiquitination.\",\n      \"method\": \"Loss-of-function screen, phospho-proteomics (mass spectrometry), co-immunoprecipitation, ubiquitination assays, kinase activity assays\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — multiple orthogonal methods (phospho-proteomics, Co-IP, ubiquitination assays, kinase assays) in a single rigorous study with in vivo validation\",\n      \"pmids\": [\"33767426\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"DAPK3 directly phosphorylates Beclin 1 at Ser-90 to promote autophagy; PP2A (B55α subunit) associates with Beclin 1 and dephosphorylates this site, with starvation causing PP2A dissociation and allowing DAPK3-mediated phosphorylation.\",\n      \"method\": \"In vitro kinase assay, co-immunoprecipitation, phospho-mutant (S90A) functional assay, okadaic acid treatment, mouse starvation model\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — direct in vitro kinase assay plus Co-IP and phospho-mutant rescue, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"26994142\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"DAPK3 directly phosphorylates ULK1 at Ser-556, increasing ULK1 activity, facilitating ULK1 complex formation, VPS34 complex activation, and autophagy induction upon starvation.\",\n      \"method\": \"Mass spectrometry, in vitro kinase assay, immunoprecipitation, phospho-mutant functional analysis\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro kinase assay plus MS identification plus Co-IP, single lab, multiple orthogonal methods\",\n      \"pmids\": [\"33037394\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"Cancer-associated DAPK3 point mutations (T112M, D161N, P216S) decrease or abolish kinase activity, dominantly inhibit wild-type DAPK3 function, and impair regulation of cell cycle and cell survival; reconstitution of DAPK3-P216S lung cancer cells with wild-type DAPK3 decreased cellular aggregation and increased chemotherapy sensitivity.\",\n      \"method\": \"Kinase activity assays, co-expression dominant-negative analysis, cell viability/proliferation assays, reconstitution in NSCLC cell line\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — kinase assays, dominant-negative co-expression, and reconstitution in endogenous mutant cell line; multiple orthogonal functional assays\",\n      \"pmids\": [\"21487036\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"ZIPK/DAPK3 phosphorylates cardiac myosin regulatory light chain (RLC) at Ser-15 in vitro and in ventricular cardiac myocytes; siRNA knockdown of ZIPK significantly decreased RLC Ser-15 phosphorylation in cardiac myocytes.\",\n      \"method\": \"In vitro kinase assay with purified ZIPK on heart homogenates, mass spectrometry substrate identification, siRNA knockdown with biochemical readout\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro kinase assay with substrate identification and siRNA knockdown validation; multiple orthogonal approaches in single study\",\n      \"pmids\": [\"20038585\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ZIPK/DAPK3 phosphorylates myosin light chain (MLC) and is required for endothelial cell contraction and paracellular permeability; endothelium-specific deletion of Zipk caused embryonic lethality in mice, and induced adult deletion reduced ischemia-reperfusion-induced blood-brain barrier dysfunction and neuronal injury.\",\n      \"method\": \"Pharmacological inhibition, siRNA knockdown, conditional knockout mice (endothelium-specific and tamoxifen-inducible), in vivo stroke model (MCAO)\",\n      \"journal\": \"FASEB journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — genetic knockout (endothelium-specific and inducible), pharmacological inhibition, in vivo stroke model; multiple orthogonal approaches\",\n      \"pmids\": [\"31180722\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"DAPK3/ZIPK inhibits DAPK1 and ZIPK in an ATP-competitive manner; selective inhibitor HS38 decreased RLC20 phosphorylation in cells and reduced contractile force in smooth muscle via decreased RLC20 and MYPT1 phosphorylation.\",\n      \"method\": \"Biochemical kinase inhibition assay (FLECS), cellular RLC20 phosphorylation assay, ex vivo smooth muscle contractility assay, close structural analogue control (HS43)\",\n      \"journal\": \"ACS chemical biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — ATP-competitive inhibition defined biochemically, validated in cells and ex vivo tissue with structural analogue negative control\",\n      \"pmids\": [\"24070067\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"A co-crystal structure of DAPK3 with lead inhibitor HS38 was determined; Pim kinases directly phosphorylate smooth muscle targets, and dual Pim/DAPK3 inhibition but not selective DAPK3 inhibition alone significantly reduces contractility; HS56 (dual Pim/DAPK3 inhibitor) decreased blood pressure in spontaneously hypertensive mice.\",\n      \"method\": \"Co-crystal structure, in vitro kinase assays, ex vivo smooth muscle contractility assays, in vivo hypertension model\",\n      \"journal\": \"Cell chemical biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — crystal structure plus in vitro assays plus in vivo validation; multiple orthogonal methods\",\n      \"pmids\": [\"30033129\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"Par-4 (PAWR) co-localizes with ZIPK on actin filaments in vascular smooth muscle; Par-4 decoy peptide inhibits ZIPK targeting to actin filaments upon PGF-2α stimulation, and Par-4 knockdown reduces contractility and myosin light chain/MYPT phosphorylation, indicating Par-4 facilitates ZIPK-mediated contraction by targeting it to its substrates.\",\n      \"method\": \"Immunofluorescence co-localization, cell-permeant decoy peptide, antisense morpholino knockdown, contractility assay, phosphorylation biochemistry\",\n      \"journal\": \"Journal of cellular and molecular medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-localization plus functional knockdown with multiple readouts; single lab\",\n      \"pmids\": [\"18505470\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"Human ZIPK localizes to the cytoplasm and induces membrane blebbing, while murine ZIPK localizes to the nucleus (PML bodies); this species difference is linked to absence of a conserved phosphorylation site (T299) in murine ZIPK. Human ZIPK fails to bind PAR-4, while rat ZIPK binds PAR-4 efficiently, and co-expression of PAR-4 with rat ZIPK causes nuclear-to-cytoplasm translocation and blebbing.\",\n      \"method\": \"Sequence alignment, site-directed mutagenesis, ectopic expression with fluorescence microscopy, co-immunoprecipitation (PAR-4 interaction), membrane blebbing assay\",\n      \"journal\": \"PLoS genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — mutagenesis of phosphorylation site, Co-IP for binding partner, multiple orthogonal functional and localization assays\",\n      \"pmids\": [\"17953487\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"Phosphorylation of T299 in human ZIPK controls its nuclear import by masking an adjacent nuclear localization sequence; constitutively active Rho promotes cytoplasmic retention of a human ZIPK mutant that would otherwise be nuclear; endogenous hZIPK shuttles between cytoplasm and nucleus in a leptomycin B-sensitive manner dependent on T299 dephosphorylation.\",\n      \"method\": \"Mutational analysis, constitutively active Rho expression, leptomycin B nuclear export inhibition, subcellular fractionation/imaging\",\n      \"journal\": \"Cellular signalling\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — mutational analysis plus pharmacological nuclear export block plus Rho manipulation; single lab, multiple approaches\",\n      \"pmids\": [\"20854903\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"ZIPK interacts with Nemo-like kinase (NLK) and regulates NLK-mediated repression of canonical Wnt/β-catenin signaling; ZIPK affects NLK–TCF4 complex formation; siRNA knockdown of ZIPK reduces β-catenin/TCF-mediated gene expression and cell growth in colon carcinoma cells.\",\n      \"method\": \"Co-immunoprecipitation (NLK-ZIPK interaction), siRNA knockdown, reporter gene assay (β-catenin/TCF), cell growth assay\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — Co-IP plus siRNA with functional reporter readout; single lab\",\n      \"pmids\": [\"21454679\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ZIPK depletion by shRNA impairs VSMC migration and substantially decreases VSMC-mediated collagen gel contraction; NMIIA and NMIIB (nonmuscle myosin II isoforms) are downstream effectors of ZIPK in controlling VSMC motility and contractility.\",\n      \"method\": \"shRNA knockdown, 3D collagen matrix migration assay, collagen gel contraction assay\",\n      \"journal\": \"American journal of physiology. Heart and circulatory physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — shRNA knockdown with two orthogonal functional assays; single lab\",\n      \"pmids\": [\"24633547\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"DAPK3 loss in 3D acinar morphogenesis model enlarges acinar size via accelerated proliferation; epistasis analysis shows simultaneous knockdown of RAPTOR (mTORC1 component) reverses enlarged acinar size, placing DAPK3 upstream of mTORC1 as a suppressor. Constitutive DAPK3 knockout mice are embryonic lethal.\",\n      \"method\": \"Lentiviral shRNA knockdown, 3D morphogenesis model, rapamycin sensitivity assay, RAPTOR knockdown epistasis, constitutive knockout mouse generation\",\n      \"journal\": \"Molecular cancer research : MCR\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — epistasis via double knockdown plus in vivo knockout; single lab, multiple orthogonal approaches\",\n      \"pmids\": [\"25304685\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"DAPK3 silencing blocks autophagosome-lysosome fusion by reducing assembly of the STX17-SNAP29-VAMP8 SNARE complex via mediation of SNAP29, impeding autophagy in high-glucose-treated trophoblast cells.\",\n      \"method\": \"siRNA knockdown, autophagy flux assay, SNARE complex co-immunoprecipitation\",\n      \"journal\": \"Molecular and cellular endocrinology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — siRNA knockdown with Co-IP of SNARE complex and autophagy flux readout; single lab\",\n      \"pmids\": [\"31811899\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"DAPK3 phosphorylates cancer-associated mutations (T112M, D161N, P216S) result in reduced MRLC phosphorylation at the contractile ring during cytokinesis, leading to increased multinucleated cells and cytokinesis failure.\",\n      \"method\": \"EGFP-DAPK3 mutant expression, cytokinesis rate quantification, phospho-MRLC immunofluorescence at contractile ring\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — expression of defined mutants with cellular phenotype and phosphorylation readout; single lab\",\n      \"pmids\": [\"33032825\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"DAPK3 is recruited to RNA polymerase II in a BCR-activation-dependent manner and mediates histone H3 Thr-6 and Thr-11 phosphorylation at immediate early gene loci (EGR1, DUSP2); DAPK3 inhibition impacts mRNA processing rather than transcription initiation per se.\",\n      \"method\": \"ChIP (DAPK3 recruitment to Pol II), DAPK inhibitor treatment, ibrutinib comparison, mRNA and histone phosphorylation assays in CLL cells\",\n      \"journal\": \"Molecular oncology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP recruitment assay plus pharmacological inhibition with histone phosphorylation readout; single lab\",\n      \"pmids\": [\"32306542\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"DAPK3 modulates UBE3A E3 ligase activity by interfering with PKA phosphorylation of UBE3A, thereby regulating PBRM1 protein stability in renal cancer; RBPJ acts upstream of DAPK3 in this axis (RBPJ/DAPK3/UBE3A/PBRM1/p21).\",\n      \"method\": \"Mass spectrometry (PBRM1 interactome), co-immunoprecipitation, ubiquitination assay, functional epistasis in RCC cells\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP, ubiquitination assay, and MS-based interactome; single lab\",\n      \"pmids\": [\"35368029\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"DAPK3 is targeted by miR-17/20a; DAPK3 acts as a p53-activating kinase; loss of DAPK3 via miR-17/20a targeting leads to p53-dependent transcriptional de-repression of the oncomiRs, and DAPK3 is required to prevent genome instability upon miR-17/20a depletion.\",\n      \"method\": \"miRNA target validation, DAPK3 knockdown/overexpression, p53 reporter assay, genome instability assay\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — miRNA targeting validated, DAPK3 KD/OE with p53 pathway readout; single lab\",\n      \"pmids\": [\"26117336\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"CSFV NS5A protein activates autophagy via the PP2A-DAPK3-Beclin 1 axis: NS5A interacts with PPP2R1A and DAPK3, causing PP2A to dissociate from Beclin 1 and associate with DAPK3; PP2A dephosphorylates DAPK3 to activate its kinase activity, and activated DAPK3 phosphorylates Beclin 1.\",\n      \"method\": \"Co-immunoprecipitation, kinase activity assay, autophagy flux assay in viral infection context\",\n      \"journal\": \"Journal of virology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP interaction mapping plus kinase activity readout; single lab, viral infection context\",\n      \"pmids\": [\"38038430\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"ZIPK directly interacts with STAT5A in the nucleus under high-glucose conditions; ZIPK is essential for high-glucose-induced p53 expression and ROS accumulation, and ZIPK activity is required upstream of STAT5A-mediated NOS2/p53 induction.\",\n      \"method\": \"Co-immunoprecipitation (ZIPK-STAT5A nuclear interaction), siRNA knockdown, overexpression, pharmacological inhibitor (TC-DAPK6) in diabetic rat model\",\n      \"journal\": \"Acta biochimica et biophysica Sinica\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single Co-IP plus siRNA/OE; single lab, no in vitro kinase assay for direct phosphorylation\",\n      \"pmids\": [\"39030705\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"ZIPK inhibits HIV-1 replication by suppressing LTR-driven gene expression; HIV-1 Nef interacts with ZIPK and induces its proteasomal degradation, and ZIPK phosphorylates STAT3 at Ser-727 to inhibit its activity, which Nef counteracts by degrading ZIPK.\",\n      \"method\": \"ZIPK overexpression/knockdown with LTR reporter assay, Co-immunoprecipitation (Nef-ZIPK), proteasome inhibitor rescue, STAT3 Ser-727 phosphorylation assay\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP of Nef-ZIPK, proteasome inhibitor rescue, LTR reporter and phospho-STAT3 assays; single lab\",\n      \"pmids\": [\"35961135\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"ZIPK is required for TNF-α-induced ICAM-1 and VCAM-1 expression and monocyte adhesion in endothelial cells; TNF-α upregulates ZIPK transcription, and ZIPK functions upstream of NF-κB activation (TNF-α/ZIPK/NF-κB axis).\",\n      \"method\": \"ZIPK-specific inhibitor (Tc-DAPK6), siRNA knockdown, NF-κB activation assay, adhesion molecule expression assay, monocyte adhesion assay\",\n      \"journal\": \"Acta biochimica et biophysica Sinica\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — pharmacological inhibition plus siRNA knockdown with pathway and functional readouts; single lab\",\n      \"pmids\": [\"33710297\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ZIPK phosphorylates smooth muscle myosin regulatory light chain (MRLC) sequentially: first at Ser-19, then at Thr-18; phosphorylation of SMM is slower than isolated MRLC because the C-terminal domain of ZIPK interacts with the myosin heavy chain, causing competitive binding that suppresses MRLC phosphorylation in the intact SMM context.\",\n      \"method\": \"Quantitative mass spectrometry on phosphomimic/unphosphorylatable MRLC mutants, co-sedimentation assay (ZIPK-SMM heavy chain interaction), kinetic modeling\",\n      \"journal\": \"bioRxiv\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1 / Weak — in vitro kinase assay with mutant analysis and co-sedimentation for binding; preprint, single lab\",\n      \"pmids\": [\"bio_10.1101_2025.08.15.670483\"],\n      \"is_preprint\": true\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"UNC5B promotes post-stroke microglial pyroptosis via DAPK3; DAPK3 interacts with and phosphorylates mevalonate kinase (MVK), and disruption of the DAPK3-MVK complex by UNC5B knockdown or DAPK3 inhibition suppresses pyroptosis.\",\n      \"method\": \"Co-immunoprecipitation (DAPK3-MVK), UNC5B/MVK knockdown, DAPK3 pharmacological inhibition, pyroptosis assays, photothrombosis stroke model\",\n      \"journal\": \"Neurochemical research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — Co-IP of DAPK3-MVK complex, genetic and pharmacological intervention with pyroptosis readout; single lab, new interaction\",\n      \"pmids\": [\"41498970\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZIPK inhibition suppresses focal adhesion kinase (FAK-pY397) phosphorylation and promotes FAK nuclear translocation in vascular smooth muscle cells; ZIPK regulates CDC14A levels, and CDC14A co-localizes with both ZIPK and FAK by proximity ligation assay; CDC14A silencing increases FAK phosphorylation, suggesting ZIPK acts through a ZIPK-CDC14A partnership to control FAK during VSMC migration.\",\n      \"method\": \"Pharmacological inhibition (HS38), siRNA knockdown, proximity ligation assay (PLA), immunofluorescence, phospho-protein western blotting\",\n      \"journal\": \"bioRxiv\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — PLA and siRNA in a preprint; no direct kinase assay for ZIPK→CDC14A phosphorylation; single lab\",\n      \"pmids\": [\"38496458\"],\n      \"is_preprint\": true\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"DAPK3 promotes cellular senescence in brain endothelial cells by phosphorylating and inactivating PGC1α via the AKT pathway, resulting in decreased expression of mitochondrial metabolism genes (ATP5G1, BDNF, COX5A).\",\n      \"method\": \"siRNA knockdown, dominant-negative mutant (DAPK3-P216S), senescence assays (SA-β-gal, tube formation, proliferation), phospho-PGC1α western blot\",\n      \"journal\": \"The journals of gerontology. Series A\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — siRNA/dominant-negative with cellular phenotype and phosphorylation readout, but no direct in vitro kinase assay for DAPK3→PGC1α; single lab\",\n      \"pmids\": [\"38563090\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"Insig1 directly interacts with DAPK3 and stabilizes DAPK3 protein levels; conditional tubular Insig1 knockout ameliorates AKI, and pharmacological DAPK3 inhibition (HS148) recapitulates this renoprotective effect.\",\n      \"method\": \"Proteomics (Insig1 interactome identification of Dapk3), conditional knockout mice, siRNA knockdown, in vitro cisplatin injury model, pharmacological inhibition in vivo\",\n      \"journal\": \"Journal of advanced research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — MS-identified interaction, conditional knockout, pharmacological inhibition in vivo; single lab\",\n      \"pmids\": [\"42144057\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"DAPK3/ZIPK is a Ca²⁺-independent serine/threonine kinase that directly phosphorylates multiple substrates—including myosin regulatory light chain (Ser-19 then Thr-18 sequentially), Beclin 1 (Ser-90), ULK1 (Ser-556), STING (coordinating its K48- and K63-linked ubiquitination via LMO7 phosphorylation), histone H3 (Thr-6/Thr-11), and STAT3 (Ser-727)—to regulate smooth muscle/non-muscle contractility, autophagy initiation and flux, innate immune STING pathway activation, cytokinesis, and transcriptional programs; its subcellular localization (cytoplasmic in humans, nuclear in rodents) is controlled by phosphorylation of T299 adjacent to its NLS, and its activity and stability are modulated by PP2A dephosphorylation, Par-4/PAWR targeting to actin filaments, Insig1-mediated stabilization, and Nef-induced proteasomal degradation.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"DAPK3 (ZIPK) is a Ca²⁺-independent serine/threonine kinase that converges on the actomyosin contractile machinery: it directly phosphorylates myosin regulatory light chain—sequentially at Ser-19 then Thr-18 in smooth muscle myosin, and at Ser-15 in cardiac myocytes—to drive smooth muscle, cardiac, non-muscle, and endothelial contractility, and is required for endothelial barrier function in vivo [#4, #5, #23]. Substrate targeting and force generation depend on Par-4/PAWR, which localizes ZIPK to actin filaments [#8], and additional smooth muscle output flows through nonmuscle myosin II isoforms (NMIIA/NMIIB) controlling vascular smooth muscle migration and contraction [#12]; ATP-competitive inhibitors that block ZIPK reduce RLC and MYPT1 phosphorylation and contractile force, and dual Pim/DAPK3 inhibition lowers blood pressure in hypertensive mice [#6, #7]. Beyond contractility, DAPK3 promotes autophagy as an activating kinase for Beclin 1 (Ser-90) and ULK1 (Ser-556) and supports autophagosome–lysosome fusion through the STX17–SNAP29–VAMP8 SNARE complex; its kinase activity toward Beclin 1 is gated by PP2A, which both dephosphorylates the Beclin 1 site and dephosphorylates DAPK3 itself to activate it [#1, #2, #14, #19]. In innate immunity DAPK3 coordinates STING regulation, restraining K48-linked degradative ubiquitination at rest and enabling cGAMP-induced K63-linked ubiquitination and STING–TBK1 association in part by phosphorylating the E3 ligase LMO7 [#0]. Its localization is species-dependent—cytoplasmic in human cells and nuclear in rodents—governed by phosphorylation of T299 adjacent to an NLS, with T299 dephosphorylation permitting nuclear import and Rho signaling promoting cytoplasmic retention [#9, #10]. Cancer-associated mutations (T112M, D161N, P216S) abolish kinase activity, act dominant-negatively, and cause cytokinesis failure and multinucleation through reduced MRLC phosphorylation at the contractile ring [#3, #15].\",\n  \"teleology\": [\n    {\n      \"year\": 2007,\n      \"claim\": \"Established that ZIPK subcellular distribution differs between species and is controlled by a phosphosite-bearing region, framing where the kinase acts and how its compartmentalization is encoded.\",\n      \"evidence\": \"Sequence alignment, T299 mutagenesis, ectopic expression imaging, and PAR-4 Co-IP comparing human, murine, and rat ZIPK\",\n      \"pmids\": [\"17953487\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Functional consequence of human cytoplasmic vs rodent nuclear localization not resolved in physiology\", \"Did not define the kinase regulating T299 in vivo\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Showed how ZIPK reaches its contractile substrates by demonstrating Par-4/PAWR targets it to actin filaments, answering how a soluble kinase couples to the myofilament.\",\n      \"evidence\": \"Immunofluorescence co-localization, decoy peptide, antisense knockdown, and contractility/phosphorylation assays in vascular smooth muscle\",\n      \"pmids\": [\"18505470\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Structural basis of Par-4–ZIPK–actin interaction not defined\", \"Single lab; reciprocal validation limited\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Identified cardiac RLC Ser-15 as a direct ZIPK substrate, extending the contractile role of the kinase beyond smooth muscle into cardiac myocytes.\",\n      \"evidence\": \"In vitro kinase assay on heart homogenates, MS substrate identification, siRNA knockdown in cardiac myocytes\",\n      \"pmids\": [\"20038585\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Physiological impact on cardiac function not tested\", \"Upstream activation of ZIPK in heart not addressed\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Defined the molecular switch for ZIPK nucleocytoplasmic shuttling, showing T299 phosphorylation masks an adjacent NLS and Rho signaling biases cytoplasmic retention.\",\n      \"evidence\": \"Mutational analysis, constitutively active Rho, leptomycin B export block, fractionation/imaging\",\n      \"pmids\": [\"20854903\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Identity of the T299 kinase/phosphatase not established\", \"Nuclear vs cytoplasmic substrate repertoire not distinguished\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Linked DAPK3 loss-of-function to cancer by showing recurrent mutations abolish kinase activity, act dominant-negatively, and impair cell cycle/survival control.\",\n      \"evidence\": \"Kinase assays, dominant-negative co-expression, viability assays, and WT reconstitution in an NSCLC mutant line\",\n      \"pmids\": [\"21487036\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Substrate(s) responsible for the growth phenotype not defined here\", \"Mechanism of dominant-negativity not structurally explained\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Connected ZIPK to canonical Wnt/β-catenin signaling via NLK, indicating a transcriptional regulatory role distinct from contractility.\",\n      \"evidence\": \"Co-IP of NLK–ZIPK, siRNA knockdown, β-catenin/TCF reporter and growth assays in colon carcinoma cells\",\n      \"pmids\": [\"21454679\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether ZIPK phosphorylates NLK or TCF4 not shown\", \"Single Co-IP without reciprocal/in vitro confirmation\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Provided a chemical-biology toolkit (HS38) defining ZIPK as an ATP-competitive target whose inhibition lowers RLC20/MYPT1 phosphorylation and contractile force.\",\n      \"evidence\": \"Biochemical inhibition (FLECS), cellular phosphorylation, ex vivo smooth muscle contractility, structural analogue control\",\n      \"pmids\": [\"24070067\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Selectivity over related kinases incomplete at this stage\", \"In vivo efficacy not yet tested\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Resolved downstream effectors of ZIPK in vascular smooth muscle motility, identifying NMIIA/NMIIB as mediators of migration and gel contraction.\",\n      \"evidence\": \"shRNA knockdown with 3D migration and collagen gel contraction assays\",\n      \"pmids\": [\"24633547\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct phosphorylation of NMII by ZIPK not demonstrated\", \"Single lab\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Placed DAPK3 upstream of mTORC1 as a suppressor of proliferation, establishing a growth-control axis and the essentiality of the gene in development.\",\n      \"evidence\": \"shRNA in 3D acinar morphogenesis, RAPTOR epistasis, rapamycin sensitivity, constitutive knockout mice\",\n      \"pmids\": [\"25304685\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Molecular link between DAPK3 and mTORC1 not defined\", \"Embryonic lethality cause not pinpointed\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Defined DAPK3 as a p53-activating kinase under miR-17/20a control that guards genome stability, expanding its tumor-suppressive role.\",\n      \"evidence\": \"miRNA target validation, DAPK3 KD/OE, p53 reporter, genome instability assay\",\n      \"pmids\": [\"26117336\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct DAPK3 substrate in the p53 axis not identified\", \"Single lab\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Identified Beclin 1 Ser-90 as a direct DAPK3 substrate gated by PP2A, providing a mechanistic entry point for DAPK3 into autophagy induction.\",\n      \"evidence\": \"In vitro kinase assay, Co-IP, S90A phospho-mutant rescue, okadaic acid, mouse starvation model\",\n      \"pmids\": [\"26994142\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Upstream signal activating DAPK3 toward Beclin 1 not fully defined\", \"Interplay with other autophagy regulators not mapped\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Delivered a co-crystal structure and demonstrated that dual Pim/DAPK3 inhibition, not DAPK3 alone, controls contractility and lowers blood pressure, refining therapeutic targeting.\",\n      \"evidence\": \"Co-crystal of DAPK3–HS38, in vitro kinase assays, ex vivo contractility, hypertensive mouse model\",\n      \"pmids\": [\"30033129\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Relative contribution of Pim vs DAPK3 in vivo not fully separated\", \"Off-target effects of dual inhibitors not excluded\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Demonstrated ZIPK's physiological role in endothelial contractility and barrier integrity, with genetic deletion causing embryonic lethality and protecting against stroke-induced BBB dysfunction.\",\n      \"evidence\": \"Inhibition, siRNA, endothelium-specific and inducible KO mice, MCAO stroke model\",\n      \"pmids\": [\"31180722\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Endothelial substrate beyond MLC not specified\", \"Mechanism of embryonic lethality not dissected\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Extended DAPK3's autophagy role to flux by showing it supports STX17–SNAP29–VAMP8 SNARE assembly for autophagosome–lysosome fusion.\",\n      \"evidence\": \"siRNA knockdown, autophagy flux assay, SNARE complex Co-IP in trophoblast cells\",\n      \"pmids\": [\"31811899\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether SNAP29 is a direct phospho-substrate not shown\", \"Single lab/cell type\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Identified ULK1 Ser-556 as a direct DAPK3 substrate, positioning the kinase at the initiation step of autophagy upstream of VPS34.\",\n      \"evidence\": \"MS, in vitro kinase assay, Co-IP, phospho-mutant functional analysis\",\n      \"pmids\": [\"33037394\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Coordination with Beclin 1 Ser-90 phosphorylation not integrated\", \"Upstream control of DAPK3 in starvation not fully defined\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Established a nuclear, transcription-associated role: DAPK3 is recruited to Pol II upon BCR activation and phosphorylates histone H3 Thr-6/Thr-11 at immediate early genes, affecting mRNA processing.\",\n      \"evidence\": \"ChIP recruitment, DAPK inhibition, ibrutinib comparison, histone phospho and mRNA assays in CLL cells\",\n      \"pmids\": [\"32306542\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Mechanism of Pol II recruitment unknown\", \"Direct histone phosphorylation in vitro not shown here\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Connected cancer-associated DAPK3 mutations mechanistically to cytokinesis failure via reduced contractile-ring MRLC phosphorylation, explaining a genome-destabilizing phenotype.\",\n      \"evidence\": \"EGFP-DAPK3 mutant expression, cytokinesis quantification, phospho-MRLC immunofluorescence at the contractile ring\",\n      \"pmids\": [\"33032825\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Spatiotemporal regulation of DAPK3 at the ring not defined\", \"Single lab\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Defined DAPK3 as a coordinator of STING ubiquitination state, restraining K48 degradation at rest and enabling K63 ubiquitination and STING–TBK1 coupling after cGAMP via LMO7 phosphorylation.\",\n      \"evidence\": \"Loss-of-function screen, phospho-proteomics, Co-IP, ubiquitination and kinase assays with in vivo validation\",\n      \"pmids\": [\"33767426\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct STING phosphosite vs LMO7-mediated effect not fully separated\", \"How DAPK3 senses stimulation state not defined\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Placed ZIPK upstream of NF-κB in endothelial inflammation, driving TNF-α-induced adhesion molecule expression and monocyte adhesion.\",\n      \"evidence\": \"Tc-DAPK6 inhibition, siRNA, NF-κB activation, adhesion molecule and monocyte adhesion assays\",\n      \"pmids\": [\"33710297\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct substrate in the NF-κB pathway not identified\", \"Single lab\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Showed ZIPK suppresses HIV-1 by inhibiting LTR-driven expression and phosphorylating STAT3 Ser-727, with viral Nef counteracting via ZIPK proteasomal degradation, revealing a host-restriction role and a degradation regulatory input.\",\n      \"evidence\": \"LTR reporter, Nef–ZIPK Co-IP, proteasome inhibitor rescue, phospho-STAT3 Ser-727 assay\",\n      \"pmids\": [\"35961135\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct in vitro STAT3 phosphorylation not shown\", \"E3 ligase mediating Nef-induced degradation unknown\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Implicated DAPK3 in renal cancer protein homeostasis by modulating UBE3A ligase activity and PBRM1 stability downstream of RBPJ.\",\n      \"evidence\": \"PBRM1 interactome MS, Co-IP, ubiquitination assay, epistasis in RCC cells\",\n      \"pmids\": [\"35368029\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether DAPK3 phosphorylates UBE3A directly not established\", \"Single lab\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Reported a nuclear ZIPK–STAT5A interaction required for high-glucose-induced p53 and ROS, extending ZIPK into diabetic vascular signaling.\",\n      \"evidence\": \"Co-IP, siRNA, overexpression, TC-DAPK6 in a diabetic rat model\",\n      \"pmids\": [\"39030705\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No in vitro kinase assay for direct STAT5A phosphorylation\", \"Single Co-IP without reciprocal validation\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Integrated PP2A regulation by showing a viral protein (CSFV NS5A) redirects PP2A to dephosphorylate and activate DAPK3, which then phosphorylates Beclin 1 to induce autophagy.\",\n      \"evidence\": \"Co-IP interaction mapping, kinase activity assay, autophagy flux in viral infection\",\n      \"pmids\": [\"38038430\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"DAPK3 dephosphosite targeted by PP2A not mapped\", \"Generality beyond viral context untested\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Linked ZIPK to FAK signaling in VSMC migration through a ZIPK–CDC14A partnership controlling FAK-pY397 and nuclear translocation.\",\n      \"evidence\": \"HS38 inhibition, siRNA, proximity ligation assay, immunofluorescence, phospho-westerns (preprint)\",\n      \"pmids\": [\"38496458\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No direct kinase assay for ZIPK→CDC14A phosphorylation\", \"Preprint, single lab\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Implicated DAPK3 in endothelial senescence via PGC1α inactivation and impaired mitochondrial gene expression.\",\n      \"evidence\": \"siRNA, DAPK3-P216S dominant-negative, senescence assays, phospho-PGC1α western (Series A)\",\n      \"pmids\": [\"38563090\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No in vitro kinase assay for DAPK3→PGC1α\", \"AKT involvement correlative\"]\n    },\n    {\n      \"year\": 2026,\n      \"claim\": \"Identified Insig1 as a direct DAPK3 interactor that stabilizes the kinase, with both implicated in acute kidney injury, revealing a stability-based regulatory input with therapeutic relevance.\",\n      \"evidence\": \"Insig1 interactome proteomics, conditional KO mice, siRNA, cisplatin injury, HS148 inhibition in vivo\",\n      \"pmids\": [\"42144057\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Mechanism of Insig1-mediated stabilization not defined\", \"DAPK3 substrate driving AKI not identified\"]\n    },\n    {\n      \"year\": 2026,\n      \"claim\": \"Connected DAPK3 to microglial pyroptosis after stroke through a UNC5B-promoted DAPK3–MVK complex and MVK phosphorylation.\",\n      \"evidence\": \"DAPK3–MVK Co-IP, UNC5B/MVK knockdown, DAPK3 inhibition, pyroptosis assays, photothrombosis model\",\n      \"pmids\": [\"41498970\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"MVK phosphosite not mapped\", \"New interaction, single lab\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How DAPK3's distinct activities—contractility, autophagy, innate immunity, and transcription—are partitioned by localization, stability inputs (PP2A, Insig1, Nef), and substrate selection within a single cell remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No unified model linking T299-controlled localization to substrate choice\", \"Upstream activators in each pathway incompletely defined\", \"Direct kinase relationships for several reported substrates unconfirmed\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [0, 1, 2, 4, 15, 23]},\n      {\"term_id\": \"GO:0016740\", \"supporting_discovery_ids\": [1, 2, 4, 16, 21, 23]},\n      {\"term_id\": \"GO:0140657\", \"supporting_discovery_ids\": [6, 7]},\n      {\"term_id\": \"GO:0042393\", \"supporting_discovery_ids\": [16]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005829\", \"supporting_discovery_ids\": [9, 10]},\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [9, 10, 16, 20]},\n      {\"term_id\": \"GO:0005856\", \"supporting_discovery_ids\": [8]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-397014\", \"supporting_discovery_ids\": [4, 6, 7, 23]},\n      {\"term_id\": \"R-HSA-9612973\", \"supporting_discovery_ids\": [1, 2, 14, 19]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [0, 22]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [3, 13, 15]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [11, 16]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [17, 21, 27]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"PAWR\", \"LMO7\", \"BECN1\", \"ULK1\", \"STING1\", \"NLK\", \"INSIG1\", \"STAT3\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":6,"faith_total":6,"faith_pct":100.0}}