{"gene":"STRAP","run_date":"2026-06-10T10:51:54","timeline":{"discoveries":[{"year":1998,"finding":"STRAP (serine-threonine kinase receptor-associated protein) is a novel WD40 domain-containing protein that interacts with TGF-β type I receptor (TβR-I) in a yeast two-hybrid system and associates with both functional TβR-I and TβR-II in vivo; overexpression of STRAP inhibits TGF-β-mediated transcriptional activation.","method":"Yeast two-hybrid, co-immunoprecipitation, transcriptional reporter assays","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal Co-IP plus functional transcriptional readout, foundational paper replicated in subsequent work","pmids":["9856985"],"is_preprint":false},{"year":2000,"finding":"STRAP synergizes specifically with Smad7 (but not Smad6) to inhibit TGF-β-induced transcriptional responses. STRAP associates stably with Smad7 and recruits it to the activated type I receptor, stabilizing the Smad7-receptor complex and preventing Smad2/Smad3 access. The C terminus of STRAP is required for its phosphorylation in vivo, which is dependent on TGF-β receptor kinases.","method":"Co-immunoprecipitation, transcriptional reporter assays, mutant analysis, in vivo phosphorylation assay","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (Co-IP, functional reporters, mutant analysis, phosphorylation assay) in a single rigorous study with defined molecular mechanism","pmids":["10757800"],"is_preprint":false},{"year":2000,"finding":"STRAP (also known as MAWD) overexpression activates mitogen-activated protein kinase signaling and promotes anchorage-independent growth of cells; the gene is frequently overexpressed in human breast tumors.","method":"Overexpression in cell lines, MAP kinase activity assay, anchorage-independent growth assay","journal":"Cancer research","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — functional overexpression assays in single study, two orthogonal readouts (MAPK activation and anchorage-independent growth)","pmids":["10646843"],"is_preprint":false},{"year":2005,"finding":"STRAP (unrip) is a component of the SMN complex, interacting directly with Gemin6 and Gemin7. Unrip also binds a subset of Sm proteins. Unrip-containing SMN complexes are necessary and sufficient to mediate assembly of spliceosomal snRNPs. Unrip localizes predominantly to the cytoplasm and is absent from nuclear gems/Cajal bodies; RNAi-mediated reduction of unrip leads to enhanced nuclear accumulation of SMN.","method":"Biochemical fractionation, co-immunoprecipitation, mass spectrometry, snRNP assembly assay, RNAi, immunofluorescence","journal":"FEBS letters / Human molecular genetics","confidence":"High","confidence_rationale":"Tier 2 / Strong — independently replicated across two labs (PMID 15848170 and 16159890) using orthogonal methods including reconstituted snRNP assembly assay and localization studies with functional consequence","pmids":["15848170","16159890"],"is_preprint":false},{"year":2006,"finding":"STRAP is localized in both cytoplasm and nucleus, is upregulated in colon and lung carcinomas, and stable STRAP expression activates the MEK/ERK pathway, downregulates p21(Cip1), and causes retinoblastoma protein hyperphosphorylation. STRAP knockout MEFs show increased Smad2/3 phosphorylation and TGF-β-mediated growth inhibition. STRAP enhances anchorage-independent growth and tumorigenicity in nude mice.","method":"Stable expression, siRNA knockdown, STRAP knockout MEFs, Western blot for pathway markers, soft agar assay, xenograft model","journal":"Cancer research","confidence":"High","confidence_rationale":"Tier 2 / Strong — loss-of-function (KO MEFs, siRNA) and gain-of-function with multiple orthogonal pathway readouts and in vivo tumorigenicity","pmids":["16778189"],"is_preprint":false},{"year":2007,"finding":"NM23-H1 and STRAP interact directly with the DNA-binding domain of p53 (residues 113-290). Cys145 of NM23-H1 and Cys152/Cys270 of STRAP mediate p53 binding. NM23-H1 and STRAP potentiate p53-mediated transcription, apoptosis, and growth inhibition; this activation is mediated by displacement of Mdm2 from the p53-Mdm2 complex.","method":"Co-immunoprecipitation, mutant analysis, transcriptional reporter assay, apoptosis assay, growth inhibition assay, RNAi knockdown","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (Co-IP, mutagenesis, functional reporters, RNAi) defining binding sites and mechanism in single rigorous study","pmids":["17916563"],"is_preprint":false},{"year":2008,"finding":"STRAP (Strap, stress-responsive activator of p300) is phosphorylated by ATM kinase upon DNA damage, which promotes its nuclear accumulation by impeding nuclear export; subsequent Chk2 phosphorylation augments STRAP protein stability once it has attained a nuclear location.","method":"Kinase assay, nuclear fractionation, mutant analysis, nuclear export inhibition","journal":"EMBO reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — direct kinase assay combined with nuclear fractionation and mutant analysis defining two distinct functional consequences of phosphorylation","pmids":["18833288"],"is_preprint":false},{"year":2008,"finding":"p49/STRAP (SRFBP1) interacts with NDUFAB1, a nuclear-encoded subunit of NADH dehydrogenase, and the two proteins co-localize in cells. Overexpression of p49/STRAP alters intracellular NAD levels and reduces the NAD/NADH ratio, and also induces deacetylation of serum response factor.","method":"Yeast two-hybrid, co-immunoprecipitation, co-localization, NAD/NADH ratio measurement, deacetylation assay","journal":"BMC cell biology","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — yeast two-hybrid plus Co-IP plus functional metabolic readout, single lab with multiple methods","pmids":["18230186"],"is_preprint":false},{"year":2009,"finding":"Deletion of STRAP from mouse embryonic fibroblasts results in loss of mesenchymal morphology, upregulation of E-cadherin via WT1 induction, formation of adherens junctions, membrane localization of β-catenin, and downregulation of mesenchymal marker LEF1. Stable re-expression of STRAP reverses this epithelial phenotype, demonstrating a TGF-β-independent role of STRAP in maintenance of mesenchymal morphology.","method":"STRAP knockout MEFs, stable reconstitution, gene expression profiling, Western blot, immunofluorescence","journal":"Cellular signalling","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic KO with rescue experiment and multiple orthogonal phenotypic readouts defining molecular pathway","pmids":["19781628"],"is_preprint":false},{"year":2010,"finding":"B-MYB directly interacts with STRAP via its DNA-binding domain and a region between its acidic and conserved regions. B-MYB enhances STRAP-mediated inhibition of TGF-β signaling (including modulation of receptor-Smad3 and receptor-Smad7 complexes) and dose-dependently increases STRAP-mediated stimulation of p53-induced apoptosis and cell cycle arrest.","method":"Co-immunoprecipitation, confocal microscopy, transcriptional reporter assay, apoptosis assay, mutant analysis","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP plus functional assays, single lab with multiple orthogonal methods","pmids":["21148321"],"is_preprint":false},{"year":2011,"finding":"STRAP binds GSK3β through its WD40 domains and forms a ternary complex with GSK3β and Axin. STRAP also binds the intracellular fragment of Notch3 (ICN3) through the ankyrin repeat domain. STRAP reduces ubiquitination of ICN3, thereby stabilizing it; this is enhanced under proteasomal inhibition conditions.","method":"Co-immunoprecipitation, GSK3β inhibitor studies, in vivo ubiquitination assay, mutant analysis","journal":"Cell cycle","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP, small-molecule inhibitor validation, and ubiquitination assay defining mechanism, single lab","pmids":["21502811"],"is_preprint":false},{"year":2011,"finding":"STRAP regulates c-Jun stability by decreasing its ubiquitylation and proteasomal degradation. Loss of STRAP in MEFs accelerates c-Jun turnover and reduces cyclin D1 expression; STRAP overexpression decreases c-Jun ubiquitylation in 293T cells.","method":"STRAP knockout MEFs, proteasomal inhibition, ubiquitination assay, cycloheximide chase","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic KO combined with ubiquitination assay and proteasome inhibitor rescue, single lab","pmids":["21397588"],"is_preprint":false},{"year":2012,"finding":"Crystal structure of full-length STRAP (Strap/stress-responsive activator of p300) at 2.05 Å resolution reveals an atypical six tetratricopeptide repeat (TPR) protein containing an unexpected oligonucleotide/oligosaccharide-binding (OB)-fold domain. Both TPR and OB-fold domains localize to chromatin of p53 target genes and exhibit intrinsic regulatory activity necessary for the Strap-dependent p53 response.","method":"X-ray crystallography, chromatin immunoprecipitation, functional transcriptional assay","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 / Strong — crystal structure at high resolution combined with ChIP and functional validation in same study","pmids":["22362889"],"is_preprint":false},{"year":2013,"finding":"STRAP is tethered to collagen α1(I) and α2(I) mRNAs via interaction with LARP6 (which binds the 5' stem-loop of collagen mRNAs). STRAP prevents unrestricted translation primarily of collagen α2(I) mRNA by interacting with eIF4A. In the absence of STRAP, more collagen α2(I) mRNA co-precipitates with eIF4A and is loaded onto polysomes, causing imbalanced synthesis of α1(I)/α2(I) polypeptides, hypermodification of α1(I), and inefficient collagen trimer assembly.","method":"RNA immunoprecipitation, polysome profiling, Co-IP, Western blot, STRAP-depletion and reconstitution","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (RNA-IP, polysome profiling, Co-IP, reconstitution) defining mechanistic role in collagen translation regulation","pmids":["23918805"],"is_preprint":false},{"year":2013,"finding":"STRAP (MAWD) inhibits proliferation and invasion in gastric cancer by inhibiting TGF-β signaling; co-expression of MAWD and MAWBP reduces Smad3 phosphorylation and nuclear translocation, and promotes expression of differentiation markers E-cadherin and pepsinogen C.","method":"Stable overexpression/knockdown, Western blot, immunofluorescence (Smad3 translocation), MTT and transwell assays, xenograft","journal":"World journal of gastroenterology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — gain- and loss-of-function with Smad3 phosphorylation readout, single lab, multiple methods","pmids":["23687415"],"is_preprint":false},{"year":2014,"finding":"STRAP downregulates E-cadherin and p21(Cip1) by abrogating binding of transcription factor Sp1 to its consensus binding sites. STRAP recruits HDAC1 to Sp1-binding sites in the p21(Cip1) promoter (by ChIP assay). Loss of STRAP stabilizes Sp1 by repressing its ubiquitination in G1, resulting in enhanced p21(Cip1) expression and cell cycle arrest.","method":"STRAP knockout/knockdown cell models, ChIP assay, ubiquitination assay, cell cycle analysis, microarray","journal":"Cell cycle","confidence":"High","confidence_rationale":"Tier 2 / Strong — ChIP assay plus ubiquitination assay plus genetic KO/KD models with multiple orthogonal readouts defining epigenetic mechanism","pmids":["25483064"],"is_preprint":false},{"year":2014,"finding":"MPK38 phosphorylates STRAP at Ser188 via direct interaction; complex formation between STRAP and MPK38 is mediated by Cys152 and Cys270 of STRAP and Cys339 and Cys377 of MPK38, indicating redox dependency. MPK38-mediated STRAP Ser188 phosphorylation promotes pro-apoptotic function of STRAP by modulating ASK1, TGF-β, p53, and PI3K/PDK1 signaling pathways.","method":"In vitro kinase assay, mutant analysis, Co-IP, inducible shRNA knockdown, adenoviral delivery in mice","journal":"Cell cycle","confidence":"High","confidence_rationale":"Tier 1 / Strong — in vitro kinase assay with site-specific mutagenesis, validated in vivo with multiple pathway readouts","pmids":["25485581"],"is_preprint":false},{"year":2014,"finding":"STRAP (Strap) localizes to mitochondria where it interacts with ATP synthase, and this interaction downregulates mitochondrial ATP production. Under glucose-limiting conditions, mitochondrial STRAP sensitizes cancer cells to apoptosis in a manner rescued by extracellular ATP. STRAP also augments apoptotic effects of mitochondrial p53.","method":"Mitochondrial fractionation, co-immunoprecipitation, ATP production assay, apoptosis assay, cell rescue experiments","journal":"Cell death and differentiation","confidence":"High","confidence_rationale":"Tier 2 / Strong — mitochondrial fractionation plus Co-IP plus functional ATP assay plus rescue experiment defining novel mitochondrial role","pmids":["25168243"],"is_preprint":false},{"year":2014,"finding":"p49/STRAP overexpression reduces actin content in cultured cells, results in smaller cell size, and alters expression of muscle-specific genes including SRF. Transgenic overexpression in mice causes malformations including asymmetric body cavities and cardiac morphology changes. Endogenous p49/STRAP localizes mainly to the nucleus but also distributes in the cytoplasm in close proximity to actin; transfected GFP-p49/STRAP co-localizes with nucleolin in the nucleolus.","method":"Transgenic mice, GFP transfection with co-localization, actin staining, gene expression analysis","journal":"BMC cell biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — transgenic overexpression with multiple in vivo and cellular phenotypes, single lab","pmids":["25183317"],"is_preprint":false},{"year":2016,"finding":"STRAP binds GSK-3β and reduces phosphorylation, ubiquitylation, and degradation of β-catenin by preventing its binding to the destruction complex. This leads to enhanced Wnt/β-catenin signaling, increased expression of cyclin D1, MMP2/9, and β-TrCP, and promotes CRC metastasis in vivo.","method":"Co-immunoprecipitation, ubiquitination assay, Western blot for β-catenin phosphorylation, knockdown/overexpression, in vivo metastasis model","journal":"Oncotarget","confidence":"High","confidence_rationale":"Tier 2 / Strong — Co-IP plus ubiquitination assay plus in vivo functional model defining mechanistic pathway","pmids":["26910283"],"is_preprint":false},{"year":2016,"finding":"STRAP acts as a scaffold protein in TLR2/4 signaling by binding TAK1, IKKα, and NF-κB subunit p65, enhancing association among these kinases and facilitating p65 phosphorylation and nuclear translocation. STRAP depletion impairs IL-6, TNF-α, and IL-1β production; STRAP overexpression increases cytokine secretion. STRAP also translocates to the nucleus after LPS stimulation to bind NF-κB, prolonging IL-6 mRNA production. The C-terminal region of STRAP is essential for this function.","method":"Co-immunoprecipitation, siRNA knockdown, overexpression, cytokine ELISA, Western blot, nuclear fractionation, mutant analysis","journal":"Scientific reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — Co-IP defining complex, combined with KD and OE functional assays and nuclear translocation, C-terminal domain mapping","pmids":["27934954"],"is_preprint":false},{"year":2017,"finding":"STRAP competitively disrupts association of PRC2 subunits EZH2 and SUZ12, thereby inhibiting PRC2 assembly. This antagonizes H3K27me3 formation at NOTCH pathway genes, leading to epigenetic activation of NOTCH signaling and maintenance of cancer stem-like cell subpopulations in colorectal cancer.","method":"Co-immunoprecipitation, ChIP for H3K27me3, STRAP silencing, NOTCH pathway rescue (lentiviral NICD1/HES1 expression), in vivo tumorigenesis model","journal":"Cancer research","confidence":"High","confidence_rationale":"Tier 2 / Strong — Co-IP defining competitive disruption of PRC2, ChIP for epigenetic mark, and pathway rescue experiment in vivo","pmids":["28827371"],"is_preprint":false},{"year":2017,"finding":"STRAP positively regulates TLR3-triggered signaling by acting as a scaffold protein that interacts with TBK1 and IRF3, enhancing IFN-β production. STRAP knockdown reduces pro-inflammatory cytokine and IFN levels in TLR3-agonist-stimulated macrophages; its C-terminus is essential for this activity.","method":"Co-immunoprecipitation, siRNA knockdown, overexpression, cytokine ELISA, mutant analysis","journal":"Cellular immunology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP plus functional KD and OE assays, single lab, consistent with PMID 27934954","pmids":["28651742"],"is_preprint":false},{"year":2018,"finding":"STRAP interacts with MELK (maternal embryonic leucine zipper kinase) in Bax-positive colorectal cancer cells. Sanguinarine dephosphorylates STRAP and MELK and disrupts their association, triggering intrinsic (Bax-dependent) apoptosis with increased mitochondrial ROS and MOMP.","method":"Co-immunoprecipitation, immunofluorescence, in vitro kinase activity assay, Western blot, flow cytometry, orthotopic in vivo model","journal":"BMC cancer","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP plus kinase assay plus in vivo model, single lab","pmids":["29783958"],"is_preprint":false},{"year":2018,"finding":"STRAP associates with Csde1 (Unr) in erythroblasts; Strap knockdown alters mRNA and/or protein expression of several Csde1-bound transcripts involved in translational regulation (including Hmbs, eIF4g3, Pabpc4, Vim, Elavl1) but does not alter the pool of transcripts bound by Csde1.","method":"Proteomics/Co-IP, RNA immunoprecipitation, siRNA knockdown, Western blot, qRT-PCR","journal":"PloS one","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — RIP plus Co-IP plus targeted KD with multiple transcript readouts, single lab","pmids":["30138317"],"is_preprint":false},{"year":2019,"finding":"During autophagy, TTC5/STRAP binds JMY (junction mediating and regulatory protein) and antagonizes JMY's actin nucleation activity, acting as a negative autophagy regulator. LC3 recruits JMY to the phagophore membrane and stimulates JMY-mediated actin filament assembly; an in vitro reconstitution system demonstrated that membrane-bound LC3 is sufficient for this recruitment and activation.","method":"Co-immunoprecipitation, in vitro actin reconstitution assay with membrane-bound LC3, autophagy functional assays","journal":"Autophagy","confidence":"High","confidence_rationale":"Tier 1 / Moderate — in vitro reconstitution of actin nucleation system with mechanistic antagonism by STRAP/TTC5 defined","pmids":["30593260"],"is_preprint":false},{"year":2020,"finding":"STRAP is a spliceosome-associated factor involved in assembly of 17S U2 snRNP proteins. Upon Strap deletion in mouse embryoid bodies, numerous alternative splicing events occur particularly for nervous system development transcripts. STRAP preferably targets transcripts for nervous system development by eCLIP-seq and regulates alternative splicing through preferred binding positions on neuronal-specific gene transcripts (Nnat, Mark3). In Xenopus, loss of Strap impedes lineage differentiation, delays neural tube closure, and alters exon skipping.","method":"eCLIP-seq, Strap knockout in mouse embryoid bodies, RNA-seq for alternative splicing, Xenopus loss-of-function, U2 snRNP assembly assay","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — eCLIP-seq plus genetic KO in two model systems plus snRNP assembly functional validation, multiple orthogonal methods","pmids":["33230114"],"is_preprint":false},{"year":2020,"finding":"STRAP (p49/STRAP) overexpression suppresses PGC-1α, mitofusin-1, and mitofusin-2 expression at mRNA and protein levels, reduces mitochondrial size, mitochondrial membrane potential, and oxygen consumption rate, and causes deacetylation of histone H4K16.","method":"Transgenic overexpression, Western blot, qRT-PCR, mitochondrial size measurement, oxygen consumption rate measurement, histone acetylation assay","journal":"Experimental gerontology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — functional overexpression with multiple mitochondrial readouts, single lab","pmids":["27337995"],"is_preprint":false},{"year":2020,"finding":"SIRT7 deacetylates STRAP at lysines 147, 148, and 156; acetylation of these residues is written by CBP acetyltransferase. Hypo- or hyperacetylation mutations at these sites (3KR or 3KQ) influence STRAP-mediated activation and stabilization of p53. Following 5-FU treatment, STRAP is mobilized from cytoplasm to nucleus with enhanced acetylation.","method":"In vitro deacetylation assay, Co-IP, mutant analysis (3KR/3KQ), p53 activity assays, nuclear fractionation after drug treatment","journal":"International journal of molecular sciences","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — biochemical acetylation assay plus mutant analysis with functional p53 readout, single lab","pmids":["32527012"],"is_preprint":false},{"year":2020,"finding":"GDF5 increases expression of STRAP and NME1 in SH-SY5Y neuronal cells. Expression of both STRAP and NME1 is necessary and sufficient for promotion of neurite growth by GDF5 in SH-SY5Y cells.","method":"Proteomics, siRNA knockdown, overexpression, neurite growth assay, in vivo GDF5 overexpression in rat brain","journal":"iScience","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KD and OE functional assays plus in vivo validation, single lab","pmids":["32853992"],"is_preprint":false},{"year":2024,"finding":"circPCNXL2 directly binds STRAP and induces interaction between STRAP and MEK1/2, resulting in activation of ERK/MAPK pathways and tumor promotion in intrahepatic cholangiocarcinoma.","method":"RNA pulldown, mass spectrometry, RNA immunoprecipitation, luciferase reporter assay, Co-IP, xenograft model","journal":"Molecular cancer","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — RNA pulldown plus Co-IP defining circRNA-STRAP-MEK complex, single lab with multiple orthogonal methods","pmids":["38365721"],"is_preprint":false},{"year":2025,"finding":"The Csde1-Strap complex directly couples Bach2 mRNA decay with translation during B cell differentiation. Strap interacts with Csde1 and both bind Bach2 mRNA; in the absence of either protein, Bach2 translation is decoupled from mRNA decay, leading to elevated and prolonged Bach2 protein expression and impaired plasma cell differentiation.","method":"RNA interactome capture-coupled CRISPR/Cas9 functional screen, Co-IP, RNA-binding assay, polysome analysis, genetic KO of Csde1 and Strap","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — CRISPR screen plus Co-IP plus RNA-binding assay plus genetic KO defining molecular mechanism of mRNA decay-translation coupling","pmids":["40133358"],"is_preprint":false},{"year":2025,"finding":"USP38 stabilizes STRAP via deubiquitination, thereby enhancing TGF-β/SMAD signaling. STRAP knockdown reverses the pro-fibrotic effects induced by USP38 overexpression in atrial cells.","method":"Co-immunoprecipitation, ubiquitination assay, immunofluorescence, cardiomyocyte-specific KO/TG mice, siRNA knockdown","journal":"Molecular medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP plus ubiquitination assay plus in vivo genetic models, single lab","pmids":["40514673"],"is_preprint":false},{"year":2025,"finding":"iNOS mediates S-nitrosylation of STRAP specifically at Cys152 and Cys270 (the same residues required for STRAP-ASK1 interaction). S-nitrosylation of STRAP disrupts the STRAP-ASK1 interaction, increases ASK1 activity, activates the MKK3-p38 pathway, and enhances hydrogen peroxide-induced apoptosis. STRAP specifically interacts with iNOS but not with eNOS or nNOS.","method":"S-nitrosylation assay, Co-IP, mutant analysis (STRAP-C152/270S), ASK1 activity assay, Western blot for MKK3/p38 phosphorylation, apoptosis assay","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 / Moderate — biochemical S-nitrosylation assay with site-specific mutagenesis defining mechanistic pathway, single rigorous study","pmids":["41519199"],"is_preprint":false},{"year":2009,"finding":"p49/STRAP interacts with the beta-sandwich domain of Hsp70, reduces the ATP-hydrolytic activity of Hsp70 stimulated by Hsp40, and inhibits the refolding activity of the Hsp70/Hsp40 system, functioning as a bona fide co-chaperone.","method":"Co-immunoprecipitation, ATPase assay, protein refolding assay, domain mapping","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 1 / Moderate — in vitro enzymatic assay (ATPase and refolding) plus Co-IP defining co-chaperone activity, single lab","pmids":["19751705"],"is_preprint":false},{"year":2006,"finding":"p49/STRAP specifically interacts with an acidic motif (Q7IGSEDG) in the N-terminus of GLUT4 and co-localizes with GLUT4 and ER-resident protein calnexin in rat adipose cells. Overexpression of the GLUT4-binding domain of p49 reduces protein synthesis and cell-surface expression of GLUT4 but not GLUT8.","method":"Yeast two-hybrid, confocal immunofluorescence, mutant GLUT4 (ED/QN) analysis, cell-surface GLUT4 quantification","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — yeast two-hybrid plus co-localization plus functional expression assay, single lab","pmids":["16647043"],"is_preprint":false},{"year":2024,"finding":"STRAP interacts with TBK1 to activate type I IFN signaling during pseudorabies virus (PRV) infection. Both the C-terminal and WD40 7-6 domains of STRAP contribute to this function. TBK1 competes with PRV-UL50 for binding to STRAP, and STRAP impedes the degradation of TBK1 mediated by PRV-UL50.","method":"Co-immunoprecipitation, domain mutant analysis, IFN reporter assay, competition binding assay","journal":"Virology journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP plus domain mapping plus competition binding assay, single lab","pmids":["39182136"],"is_preprint":false}],"current_model":"STRAP is a WD40/TPR-OB-fold scaffold protein that functions at multiple levels: it inhibits TGF-β signaling by recruiting Smad7 to stabilize its association with activated type I receptor (blocking Smad2/3 access); it modulates p53 activity by interacting with p53's DNA-binding domain (displacing Mdm2), and its nuclear accumulation and stability are controlled by ATM/Chk2 phosphorylation and CBP/SIRT7-mediated acetylation; it scaffolds the GSK3β/Axin complex to prevent β-catenin ubiquitylation and degradation, thereby enhancing Wnt signaling; it disrupts PRC2 (EZH2-SUZ12) assembly to epigenetically activate NOTCH target genes; it is a component of the SMN/U2 snRNP assembly complex (via Gemin6/7 interaction) and regulates alternative splicing; it tethers to collagen mRNAs via LARP6 to restrain eIF4A-dependent translation of α2(I) collagen; it co-assembles with Csde1 to couple Bach2 mRNA decay with translation; it antagonizes JMY-mediated actin nucleation during autophagy; it is S-nitrosylated by iNOS at Cys152/270 to release ASK1 and promote apoptosis; and it is deubiquitinated and stabilized by USP38."},"narrative":{"mechanistic_narrative":"STRAP is a WD40/TPR-OB-fold scaffold protein that integrates signaling, transcriptional, and post-transcriptional control across multiple pathways, broadly favoring proliferation and tumorigenicity [PMID:9856985, PMID:16778189]. It was first defined as a negative regulator of TGF-β signaling: STRAP binds the type I and type II TGF-β receptors and, by recruiting and stabilizing Smad7 at the activated receptor, blocks Smad2/3 access and dampens TGF-β transcriptional responses [PMID:9856985, PMID:10757800]; loss of STRAP correspondingly increases Smad2/3 phosphorylation and TGF-β-mediated growth inhibition while activating MEK/ERK signaling and downregulating p21(Cip1) [PMID:16778189]. STRAP modulates the p53 tumor-suppressor axis by binding the p53 DNA-binding domain to displace Mdm2 and potentiate p53-dependent transcription and apoptosis [PMID:17916563], an activity tuned by ATM/Chk2 phosphorylation that drives its nuclear accumulation and stability [PMID:18833288] and by CBP/SIRT7-controlled acetylation [PMID:32527012]; a high-resolution crystal structure established its atypical six-TPR architecture with an OB-fold domain that engages chromatin at p53 target genes [PMID:22362889]. Beyond these axes, STRAP scaffolds the GSK3β/Axin destruction complex to protect β-catenin from ubiquitylation and enhance Wnt signaling and metastasis [PMID:21502811, PMID:26910283], disrupts EZH2–SUZ12 assembly to derepress NOTCH target genes and sustain cancer stem-like cells [PMID:28827371], and acts as a scaffold in innate immune signaling by bridging TAK1/IKKα/p65 and TBK1/IRF3 to promote NF-κB- and IFN-dependent cytokine production [PMID:27934954, PMID:28651742]. STRAP also has a conserved post-transcriptional role as a cytoplasmic component of the SMN complex that mediates spliceosomal snRNP assembly and regulates alternative splicing of nervous-system transcripts [PMID:15848170, PMID:16159890, PMID:33230114], restrains eIF4A-dependent translation of collagen α2(I) mRNA via LARP6 [PMID:23918805], and couples Bach2 mRNA decay to translation with Csde1 during B-cell differentiation [PMID:40133358]. It further controls apoptosis through redox-sensitive cysteines: iNOS-mediated S-nitrosylation at Cys152/270 releases ASK1 to activate p38 and promote apoptosis [PMID:41519199].","teleology":[{"year":1998,"claim":"Established STRAP's founding identity by showing a WD40 protein physically associates with TGF-β receptors and inhibits their transcriptional output, defining a new receptor-proximal regulator.","evidence":"Yeast two-hybrid, co-IP and reporter assays with TβR-I/TβR-II","pmids":["9856985"],"confidence":"High","gaps":["Mechanism of inhibition not resolved at this stage","No structural basis for receptor binding"]},{"year":2000,"claim":"Resolved how STRAP inhibits TGF-β signaling, showing it synergizes with Smad7 to stabilize the Smad7-receptor complex and exclude Smad2/3.","evidence":"Co-IP, mutant analysis, in vivo phosphorylation, reporter assays","pmids":["10757800"],"confidence":"High","gaps":["Identity of the receptor-dependent kinase phosphorylating STRAP's C terminus","Smad6 specificity basis unexplained"]},{"year":2000,"claim":"Linked STRAP overexpression to oncogenic phenotypes, connecting it to MAPK activation and breast tumor biology.","evidence":"Overexpression, MAPK activity and anchorage-independent growth assays","pmids":["10646843"],"confidence":"Medium","gaps":["MAPK activation mechanism not defined","Correlative tumor overexpression without causal test"]},{"year":2005,"claim":"Established a distinct post-transcriptional role by placing STRAP (unrip) in the cytoplasmic SMN complex required for snRNP assembly.","evidence":"Fractionation, co-IP, mass spec, snRNP assembly assay, RNAi, immunofluorescence across two labs","pmids":["15848170","16159890"],"confidence":"High","gaps":["How STRAP partitions SMN between cytoplasm and gems mechanistically","Direct RNA contacts not yet mapped"]},{"year":2006,"claim":"Provided genetic loss-of-function evidence that STRAP restrains TGF-β growth inhibition and drives tumorigenicity via MEK/ERK and p21 downregulation.","evidence":"STRAP knockout MEFs, siRNA, pathway Western blots, soft agar, xenograft","pmids":["16778189"],"confidence":"High","gaps":["Direct link between STRAP and MEK/ERK activation not biochemically defined","Nuclear function not addressed"]},{"year":2007,"claim":"Defined a p53-activating function, showing STRAP binds the p53 DNA-binding domain via Cys152/270 and displaces Mdm2 to potentiate p53-dependent apoptosis.","evidence":"Co-IP, cysteine mutagenesis, reporter, apoptosis and growth assays, RNAi","pmids":["17916563"],"confidence":"High","gaps":["How a TGF-β inhibitor reconciles with p53 tumor-suppressor activation","Stoichiometry of the p53/NM23-H1/STRAP complex"]},{"year":2008,"claim":"Identified DNA-damage control of STRAP, showing ATM phosphorylation drives nuclear accumulation and Chk2 phosphorylation stabilizes the nuclear pool.","evidence":"Kinase assay, nuclear fractionation, export inhibition, mutant analysis","pmids":["18833288"],"confidence":"High","gaps":["Phosphosite identity for ATM/Chk2 not fully mapped","Export machinery involved not identified"]},{"year":2008,"claim":"Reported a metabolic link, with p49/STRAP binding NDUFAB1 and altering NAD/NADH ratio and SRF deacetylation.","evidence":"Yeast two-hybrid, co-IP, co-localization, NAD/NADH and deacetylation assays","pmids":["18230186"],"confidence":"Medium","gaps":["Mechanism connecting NDUFAB1 binding to NAD changes unclear","Relationship to scaffold functions undefined"]},{"year":2009,"claim":"Demonstrated a TGF-β-independent role of STRAP in maintaining mesenchymal morphology via WT1/E-cadherin and β-catenin localization.","evidence":"Knockout MEFs with rescue, expression profiling, immunofluorescence","pmids":["19781628"],"confidence":"High","gaps":["How STRAP represses E-cadherin mechanistically not yet shown here","Link to Wnt signaling not yet established"]},{"year":2009,"claim":"Defined an in vitro co-chaperone activity, with p49/STRAP binding Hsp70 and inhibiting Hsp70/Hsp40 refolding.","evidence":"Co-IP, ATPase assay, refolding assay, domain mapping","pmids":["19751705"],"confidence":"Medium","gaps":["Cellular relevance of chaperone inhibition untested","Substrate clients not identified"]},{"year":2011,"claim":"Connected STRAP to Wnt and Notch stability control, showing it forms a GSK3β/Axin ternary complex and stabilizes ICN3 by reducing its ubiquitination.","evidence":"Co-IP, GSK3β inhibitor studies, in vivo ubiquitination, mutant analysis","pmids":["21502811"],"confidence":"Medium","gaps":["Whether STRAP acts catalytically or sterically on ubiquitination unclear","Single-lab finding"]},{"year":2012,"claim":"Resolved STRAP's architecture, revealing an atypical six-TPR fold with an OB-fold domain that engages chromatin at p53 targets.","evidence":"2.05 Å crystal structure, ChIP, transcriptional assay","pmids":["22362889"],"confidence":"High","gaps":["Structural basis of partner binding (Smad7, GSK3β) not co-crystallized","OB-fold nucleic-acid binding not directly demonstrated"]},{"year":2013,"claim":"Established a translational control function, showing STRAP is tethered to collagen mRNAs via LARP6 and restrains eIF4A-dependent translation of collagen α2(I).","evidence":"RNA-IP, polysome profiling, co-IP, depletion/reconstitution","pmids":["23918805"],"confidence":"High","gaps":["Whether STRAP directly contacts eIF4A or acts via LARP6 not fully separated","Generality beyond collagen mRNAs"]},{"year":2014,"claim":"Defined an epigenetic gene-repression mechanism, with STRAP recruiting HDAC1 and blocking Sp1 to downregulate p21 and E-cadherin.","evidence":"Knockout/knockdown models, ChIP, ubiquitination assay, cell cycle analysis","pmids":["25483064"],"confidence":"High","gaps":["Direct STRAP-HDAC1 contact vs indirect recruitment unresolved","How STRAP destabilizes Sp1 mechanistically"]},{"year":2014,"claim":"Identified MPK38-mediated Ser188 phosphorylation as a redox-dependent switch promoting STRAP's pro-apoptotic functions.","evidence":"In vitro kinase assay, cysteine mutants, co-IP, inducible shRNA, in vivo delivery","pmids":["25485581"],"confidence":"High","gaps":["How Ser188 phosphorylation reroutes STRAP between pathways","Physiological trigger for MPK38 engagement"]},{"year":2014,"claim":"Revealed a mitochondrial role, with STRAP binding ATP synthase to suppress ATP production and sensitize cancer cells to apoptosis.","evidence":"Mitochondrial fractionation, co-IP, ATP and apoptosis assays, rescue","pmids":["25168243"],"confidence":"High","gaps":["How STRAP traffics to mitochondria unknown","Subunit of ATP synthase bound not specified"]},{"year":2016,"claim":"Consolidated the Wnt-enhancing mechanism, showing STRAP binds GSK-3β to block β-catenin destruction-complex engagement and promote CRC metastasis.","evidence":"Co-IP, ubiquitination assay, knockdown/overexpression, in vivo metastasis","pmids":["26910283"],"confidence":"High","gaps":["Reconciliation with STRAP's epithelial-promoting roles in other contexts","Direct vs scaffold-mediated GSK3β inhibition"]},{"year":2016,"claim":"Defined STRAP as a scaffold in TLR2/4-NF-κB signaling, bridging TAK1, IKKα and p65 to drive cytokine production.","evidence":"Co-IP, siRNA, overexpression, cytokine ELISA, nuclear fractionation, mutant analysis","pmids":["27934954"],"confidence":"High","gaps":["Structural basis of multi-kinase scaffolding","Regulation of STRAP recruitment to the pathway"]},{"year":2017,"claim":"Extended STRAP's epigenetic role, showing it competitively disrupts EZH2-SUZ12 to derepress NOTCH genes and sustain cancer stem-like cells.","evidence":"Co-IP, H3K27me3 ChIP, silencing, NOTCH rescue, in vivo tumorigenesis","pmids":["28827371"],"confidence":"High","gaps":["Which STRAP domain mediates PRC2 disruption","Whether this competes with its TPR/OB chromatin functions"]},{"year":2017,"claim":"Generalized the immune scaffold role to TLR3, showing STRAP bridges TBK1 and IRF3 to enhance IFN-β production.","evidence":"Co-IP, siRNA, overexpression, cytokine ELISA, mutant analysis","pmids":["28651742"],"confidence":"Medium","gaps":["Direct vs indirect TBK1/IRF3 binding","Single-lab finding"]},{"year":2018,"claim":"Coupled STRAP to mRNA translational regulation in erythroblasts via the Csde1 (Unr) complex.","evidence":"Proteomics/co-IP, RNA-IP, siRNA, Western blot, qRT-PCR","pmids":["30138317"],"confidence":"Medium","gaps":["Mechanism by which STRAP alters Csde1 target output without changing binding","Direct RNA contacts of STRAP unmapped"]},{"year":2019,"claim":"Defined STRAP/TTC5 as a negative autophagy regulator that antagonizes JMY-mediated actin nucleation at the phagophore.","evidence":"Co-IP, in vitro actin reconstitution with membrane-bound LC3, autophagy assays","pmids":["30593260"],"confidence":"High","gaps":["How STRAP binding inhibits JMY mechanistically","Regulation of STRAP-JMY engagement during autophagy"]},{"year":2020,"claim":"Defined STRAP as a spliceosome-associated U2 snRNP assembly factor regulating alternative splicing of nervous-system transcripts during development.","evidence":"eCLIP-seq, knockout in mouse embryoid bodies and Xenopus, RNA-seq, snRNP assembly assay","pmids":["33230114"],"confidence":"High","gaps":["How RNA-binding integrates with SMN-complex role","Splice-site selection rules from eCLIP positions"]},{"year":2020,"claim":"Identified acetylation control of STRAP, with CBP writing and SIRT7 erasing K147/148/156 marks that tune p53 activation and nuclear mobilization.","evidence":"In vitro deacetylation, co-IP, 3KR/3KQ mutants, p53 assays, fractionation after 5-FU","pmids":["32527012"],"confidence":"Medium","gaps":["Interplay with ATM/Chk2 phosphorylation control","Single-lab finding"]},{"year":2025,"claim":"Demonstrated that the Csde1-STRAP complex directly couples Bach2 mRNA decay with translation to enable plasma cell differentiation.","evidence":"RNA interactome-coupled CRISPR screen, co-IP, RNA-binding, polysome analysis, genetic KO","pmids":["40133358"],"confidence":"High","gaps":["Biochemical basis for decay-translation coupling","Generality beyond Bach2 mRNA"]},{"year":2025,"claim":"Defined redox regulation of STRAP-controlled apoptosis, with iNOS S-nitrosylating Cys152/270 to release ASK1 and activate p38.","evidence":"S-nitrosylation assay, co-IP, cysteine mutants, ASK1/MKK3/p38 readouts, apoptosis assay","pmids":["41519199"],"confidence":"High","gaps":["How the same cysteines coordinate p53, MPK38 and ASK1 functions","Physiological iNOS-driven contexts in vivo"]},{"year":null,"claim":"How STRAP's many context-specific roles (TGF-β inhibition, p53 activation, Wnt/Notch enhancement, RNA processing, immune scaffolding) are selected within a single cell remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unified model linking post-translational state (phospho/acetyl/S-nitrosyl) to pathway selection","Limited structural data on partner-bound complexes","Reconciliation of tumor-suppressive vs oncogenic activities"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0060090","term_label":"molecular adaptor activity","supporting_discovery_ids":[1,20,22]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[5,19,21]},{"term_id":"GO:0003723","term_label":"RNA binding","supporting_discovery_ids":[13,26,31]},{"term_id":"GO:0045182","term_label":"translation regulator activity","supporting_discovery_ids":[13,31]},{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[12]}],"localization":[{"term_id":"GO:0005829","term_label":"cytosol","supporting_discovery_ids":[3,4]},{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[4,6,20]},{"term_id":"GO:0005739","term_label":"mitochondrion","supporting_discovery_ids":[17]},{"term_id":"GO:0000228","term_label":"nuclear chromosome","supporting_discovery_ids":[12,15,21]}],"pathway":[{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[0,1,19]},{"term_id":"R-HSA-8953854","term_label":"Metabolism of RNA","supporting_discovery_ids":[3,26,31]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[20,22]},{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[5,17,33]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[15,21]},{"term_id":"R-HSA-9612973","term_label":"Autophagy","supporting_discovery_ids":[25]}],"complexes":["SMN complex","GSK3β/Axin destruction complex","Csde1-STRAP mRNP","17S U2 snRNP assembly machinery"],"partners":["SMAD7","TP53","GSK3B","LARP6","CSDE1","TBK1","EZH2","GEMIN7"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q9Y3F4","full_name":"Serine-threonine kinase receptor-associated protein","aliases":["MAP activator with WD repeats","UNR-interacting protein","WD-40 repeat protein PT-WD"],"length_aa":350,"mass_kda":38.4,"function":"The SMN complex catalyzes the assembly of small nuclear ribonucleoproteins (snRNPs), the building blocks of the spliceosome, and thereby plays an important role in the splicing of cellular pre-mRNAs. Most spliceosomal snRNPs contain a common set of Sm proteins SNRPB, SNRPD1, SNRPD2, SNRPD3, SNRPE, SNRPF and SNRPG that assemble in a heptameric protein ring on the Sm site of the small nuclear RNA to form the core snRNP (Sm core). In the cytosol, the Sm proteins SNRPD1, SNRPD2, SNRPE, SNRPF and SNRPG are trapped in an inactive 6S pICln-Sm complex by the chaperone CLNS1A that controls the assembly of the core snRNP. To assemble core snRNPs, the SMN complex accepts the trapped 5Sm proteins from CLNS1A forming an intermediate. Binding of snRNA inside 5Sm triggers eviction of the SMN complex, thereby allowing binding of SNRPD3 and SNRPB to complete assembly of the core snRNP. STRAP plays a role in the cellular distribution of the SMN complex. Negatively regulates TGF-beta signaling but positively regulates the PDPK1 kinase activity by enhancing its autophosphorylation and by significantly reducing the association of PDPK1 with 14-3-3 protein","subcellular_location":"Cytoplasm; Nucleus","url":"https://www.uniprot.org/uniprotkb/Q9Y3F4/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":true,"resolved_as":"","url":"https://depmap.org/portal/gene/STRAP","classification":"Common 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GEMIN7","url":"https://www.omim.org/entry/607419"},{"mim_id":"607006","title":"GEM NUCLEAR ORGANELLE-ASSOCIATED PROTEIN 6; GEMIN6","url":"https://www.omim.org/entry/607006"},{"mim_id":"605986","title":"SERINE/THREONINE KINASE RECEPTOR-ASSOCIATED PROTEIN; STRAP","url":"https://www.omim.org/entry/605986"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Cytosol","reliability":"Supported"},{"location":"Cell Junctions","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/STRAP"},"hgnc":{"alias_symbol":["UNRIP","pt-wd","MAWD"],"prev_symbol":[]},"alphafold":{"accession":"Q9Y3F4","domains":[{"cath_id":"2.130.10.10","chopping":"16-181","consensus_level":"medium","plddt":97.6925,"start":16,"end":181},{"cath_id":"2.130.10.10","chopping":"193-295","consensus_level":"medium","plddt":96.7245,"start":193,"end":295}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y3F4","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y3F4-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y3F4-F1-predicted_aligned_error_v6.png","plddt_mean":89.56},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=STRAP","jax_strain_url":"https://www.jax.org/strain/search?query=STRAP"},"sequence":{"accession":"Q9Y3F4","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9Y3F4.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9Y3F4/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y3F4"}},"corpus_meta":[{"pmid":"24678027","id":"PMC_24678027","title":"Suspension 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   \"year\": 1998,\n      \"finding\": \"STRAP (serine-threonine kinase receptor-associated protein) is a novel WD40 domain-containing protein that interacts with TGF-β type I receptor (TβR-I) in a yeast two-hybrid system and associates with both functional TβR-I and TβR-II in vivo; overexpression of STRAP inhibits TGF-β-mediated transcriptional activation.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, transcriptional reporter assays\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal Co-IP plus functional transcriptional readout, foundational paper replicated in subsequent work\",\n      \"pmids\": [\"9856985\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"STRAP synergizes specifically with Smad7 (but not Smad6) to inhibit TGF-β-induced transcriptional responses. STRAP associates stably with Smad7 and recruits it to the activated type I receptor, stabilizing the Smad7-receptor complex and preventing Smad2/Smad3 access. The C terminus of STRAP is required for its phosphorylation in vivo, which is dependent on TGF-β receptor kinases.\",\n      \"method\": \"Co-immunoprecipitation, transcriptional reporter assays, mutant analysis, in vivo phosphorylation assay\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (Co-IP, functional reporters, mutant analysis, phosphorylation assay) in a single rigorous study with defined molecular mechanism\",\n      \"pmids\": [\"10757800\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"STRAP (also known as MAWD) overexpression activates mitogen-activated protein kinase signaling and promotes anchorage-independent growth of cells; the gene is frequently overexpressed in human breast tumors.\",\n      \"method\": \"Overexpression in cell lines, MAP kinase activity assay, anchorage-independent growth assay\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — functional overexpression assays in single study, two orthogonal readouts (MAPK activation and anchorage-independent growth)\",\n      \"pmids\": [\"10646843\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"STRAP (unrip) is a component of the SMN complex, interacting directly with Gemin6 and Gemin7. Unrip also binds a subset of Sm proteins. Unrip-containing SMN complexes are necessary and sufficient to mediate assembly of spliceosomal snRNPs. Unrip localizes predominantly to the cytoplasm and is absent from nuclear gems/Cajal bodies; RNAi-mediated reduction of unrip leads to enhanced nuclear accumulation of SMN.\",\n      \"method\": \"Biochemical fractionation, co-immunoprecipitation, mass spectrometry, snRNP assembly assay, RNAi, immunofluorescence\",\n      \"journal\": \"FEBS letters / Human molecular genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — independently replicated across two labs (PMID 15848170 and 16159890) using orthogonal methods including reconstituted snRNP assembly assay and localization studies with functional consequence\",\n      \"pmids\": [\"15848170\", \"16159890\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"STRAP is localized in both cytoplasm and nucleus, is upregulated in colon and lung carcinomas, and stable STRAP expression activates the MEK/ERK pathway, downregulates p21(Cip1), and causes retinoblastoma protein hyperphosphorylation. STRAP knockout MEFs show increased Smad2/3 phosphorylation and TGF-β-mediated growth inhibition. STRAP enhances anchorage-independent growth and tumorigenicity in nude mice.\",\n      \"method\": \"Stable expression, siRNA knockdown, STRAP knockout MEFs, Western blot for pathway markers, soft agar assay, xenograft model\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — loss-of-function (KO MEFs, siRNA) and gain-of-function with multiple orthogonal pathway readouts and in vivo tumorigenicity\",\n      \"pmids\": [\"16778189\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"NM23-H1 and STRAP interact directly with the DNA-binding domain of p53 (residues 113-290). Cys145 of NM23-H1 and Cys152/Cys270 of STRAP mediate p53 binding. NM23-H1 and STRAP potentiate p53-mediated transcription, apoptosis, and growth inhibition; this activation is mediated by displacement of Mdm2 from the p53-Mdm2 complex.\",\n      \"method\": \"Co-immunoprecipitation, mutant analysis, transcriptional reporter assay, apoptosis assay, growth inhibition assay, RNAi knockdown\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (Co-IP, mutagenesis, functional reporters, RNAi) defining binding sites and mechanism in single rigorous study\",\n      \"pmids\": [\"17916563\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"STRAP (Strap, stress-responsive activator of p300) is phosphorylated by ATM kinase upon DNA damage, which promotes its nuclear accumulation by impeding nuclear export; subsequent Chk2 phosphorylation augments STRAP protein stability once it has attained a nuclear location.\",\n      \"method\": \"Kinase assay, nuclear fractionation, mutant analysis, nuclear export inhibition\",\n      \"journal\": \"EMBO reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — direct kinase assay combined with nuclear fractionation and mutant analysis defining two distinct functional consequences of phosphorylation\",\n      \"pmids\": [\"18833288\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"p49/STRAP (SRFBP1) interacts with NDUFAB1, a nuclear-encoded subunit of NADH dehydrogenase, and the two proteins co-localize in cells. Overexpression of p49/STRAP alters intracellular NAD levels and reduces the NAD/NADH ratio, and also induces deacetylation of serum response factor.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, co-localization, NAD/NADH ratio measurement, deacetylation assay\",\n      \"journal\": \"BMC cell biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — yeast two-hybrid plus Co-IP plus functional metabolic readout, single lab with multiple methods\",\n      \"pmids\": [\"18230186\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Deletion of STRAP from mouse embryonic fibroblasts results in loss of mesenchymal morphology, upregulation of E-cadherin via WT1 induction, formation of adherens junctions, membrane localization of β-catenin, and downregulation of mesenchymal marker LEF1. Stable re-expression of STRAP reverses this epithelial phenotype, demonstrating a TGF-β-independent role of STRAP in maintenance of mesenchymal morphology.\",\n      \"method\": \"STRAP knockout MEFs, stable reconstitution, gene expression profiling, Western blot, immunofluorescence\",\n      \"journal\": \"Cellular signalling\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic KO with rescue experiment and multiple orthogonal phenotypic readouts defining molecular pathway\",\n      \"pmids\": [\"19781628\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"B-MYB directly interacts with STRAP via its DNA-binding domain and a region between its acidic and conserved regions. B-MYB enhances STRAP-mediated inhibition of TGF-β signaling (including modulation of receptor-Smad3 and receptor-Smad7 complexes) and dose-dependently increases STRAP-mediated stimulation of p53-induced apoptosis and cell cycle arrest.\",\n      \"method\": \"Co-immunoprecipitation, confocal microscopy, transcriptional reporter assay, apoptosis assay, mutant analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP plus functional assays, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"21148321\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"STRAP binds GSK3β through its WD40 domains and forms a ternary complex with GSK3β and Axin. STRAP also binds the intracellular fragment of Notch3 (ICN3) through the ankyrin repeat domain. STRAP reduces ubiquitination of ICN3, thereby stabilizing it; this is enhanced under proteasomal inhibition conditions.\",\n      \"method\": \"Co-immunoprecipitation, GSK3β inhibitor studies, in vivo ubiquitination assay, mutant analysis\",\n      \"journal\": \"Cell cycle\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP, small-molecule inhibitor validation, and ubiquitination assay defining mechanism, single lab\",\n      \"pmids\": [\"21502811\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"STRAP regulates c-Jun stability by decreasing its ubiquitylation and proteasomal degradation. Loss of STRAP in MEFs accelerates c-Jun turnover and reduces cyclin D1 expression; STRAP overexpression decreases c-Jun ubiquitylation in 293T cells.\",\n      \"method\": \"STRAP knockout MEFs, proteasomal inhibition, ubiquitination assay, cycloheximide chase\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic KO combined with ubiquitination assay and proteasome inhibitor rescue, single lab\",\n      \"pmids\": [\"21397588\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Crystal structure of full-length STRAP (Strap/stress-responsive activator of p300) at 2.05 Å resolution reveals an atypical six tetratricopeptide repeat (TPR) protein containing an unexpected oligonucleotide/oligosaccharide-binding (OB)-fold domain. Both TPR and OB-fold domains localize to chromatin of p53 target genes and exhibit intrinsic regulatory activity necessary for the Strap-dependent p53 response.\",\n      \"method\": \"X-ray crystallography, chromatin immunoprecipitation, functional transcriptional assay\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — crystal structure at high resolution combined with ChIP and functional validation in same study\",\n      \"pmids\": [\"22362889\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"STRAP is tethered to collagen α1(I) and α2(I) mRNAs via interaction with LARP6 (which binds the 5' stem-loop of collagen mRNAs). STRAP prevents unrestricted translation primarily of collagen α2(I) mRNA by interacting with eIF4A. In the absence of STRAP, more collagen α2(I) mRNA co-precipitates with eIF4A and is loaded onto polysomes, causing imbalanced synthesis of α1(I)/α2(I) polypeptides, hypermodification of α1(I), and inefficient collagen trimer assembly.\",\n      \"method\": \"RNA immunoprecipitation, polysome profiling, Co-IP, Western blot, STRAP-depletion and reconstitution\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (RNA-IP, polysome profiling, Co-IP, reconstitution) defining mechanistic role in collagen translation regulation\",\n      \"pmids\": [\"23918805\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"STRAP (MAWD) inhibits proliferation and invasion in gastric cancer by inhibiting TGF-β signaling; co-expression of MAWD and MAWBP reduces Smad3 phosphorylation and nuclear translocation, and promotes expression of differentiation markers E-cadherin and pepsinogen C.\",\n      \"method\": \"Stable overexpression/knockdown, Western blot, immunofluorescence (Smad3 translocation), MTT and transwell assays, xenograft\",\n      \"journal\": \"World journal of gastroenterology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — gain- and loss-of-function with Smad3 phosphorylation readout, single lab, multiple methods\",\n      \"pmids\": [\"23687415\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"STRAP downregulates E-cadherin and p21(Cip1) by abrogating binding of transcription factor Sp1 to its consensus binding sites. STRAP recruits HDAC1 to Sp1-binding sites in the p21(Cip1) promoter (by ChIP assay). Loss of STRAP stabilizes Sp1 by repressing its ubiquitination in G1, resulting in enhanced p21(Cip1) expression and cell cycle arrest.\",\n      \"method\": \"STRAP knockout/knockdown cell models, ChIP assay, ubiquitination assay, cell cycle analysis, microarray\",\n      \"journal\": \"Cell cycle\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — ChIP assay plus ubiquitination assay plus genetic KO/KD models with multiple orthogonal readouts defining epigenetic mechanism\",\n      \"pmids\": [\"25483064\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"MPK38 phosphorylates STRAP at Ser188 via direct interaction; complex formation between STRAP and MPK38 is mediated by Cys152 and Cys270 of STRAP and Cys339 and Cys377 of MPK38, indicating redox dependency. MPK38-mediated STRAP Ser188 phosphorylation promotes pro-apoptotic function of STRAP by modulating ASK1, TGF-β, p53, and PI3K/PDK1 signaling pathways.\",\n      \"method\": \"In vitro kinase assay, mutant analysis, Co-IP, inducible shRNA knockdown, adenoviral delivery in mice\",\n      \"journal\": \"Cell cycle\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — in vitro kinase assay with site-specific mutagenesis, validated in vivo with multiple pathway readouts\",\n      \"pmids\": [\"25485581\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"STRAP (Strap) localizes to mitochondria where it interacts with ATP synthase, and this interaction downregulates mitochondrial ATP production. Under glucose-limiting conditions, mitochondrial STRAP sensitizes cancer cells to apoptosis in a manner rescued by extracellular ATP. STRAP also augments apoptotic effects of mitochondrial p53.\",\n      \"method\": \"Mitochondrial fractionation, co-immunoprecipitation, ATP production assay, apoptosis assay, cell rescue experiments\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — mitochondrial fractionation plus Co-IP plus functional ATP assay plus rescue experiment defining novel mitochondrial role\",\n      \"pmids\": [\"25168243\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"p49/STRAP overexpression reduces actin content in cultured cells, results in smaller cell size, and alters expression of muscle-specific genes including SRF. Transgenic overexpression in mice causes malformations including asymmetric body cavities and cardiac morphology changes. Endogenous p49/STRAP localizes mainly to the nucleus but also distributes in the cytoplasm in close proximity to actin; transfected GFP-p49/STRAP co-localizes with nucleolin in the nucleolus.\",\n      \"method\": \"Transgenic mice, GFP transfection with co-localization, actin staining, gene expression analysis\",\n      \"journal\": \"BMC cell biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — transgenic overexpression with multiple in vivo and cellular phenotypes, single lab\",\n      \"pmids\": [\"25183317\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"STRAP binds GSK-3β and reduces phosphorylation, ubiquitylation, and degradation of β-catenin by preventing its binding to the destruction complex. This leads to enhanced Wnt/β-catenin signaling, increased expression of cyclin D1, MMP2/9, and β-TrCP, and promotes CRC metastasis in vivo.\",\n      \"method\": \"Co-immunoprecipitation, ubiquitination assay, Western blot for β-catenin phosphorylation, knockdown/overexpression, in vivo metastasis model\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — Co-IP plus ubiquitination assay plus in vivo functional model defining mechanistic pathway\",\n      \"pmids\": [\"26910283\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"STRAP acts as a scaffold protein in TLR2/4 signaling by binding TAK1, IKKα, and NF-κB subunit p65, enhancing association among these kinases and facilitating p65 phosphorylation and nuclear translocation. STRAP depletion impairs IL-6, TNF-α, and IL-1β production; STRAP overexpression increases cytokine secretion. STRAP also translocates to the nucleus after LPS stimulation to bind NF-κB, prolonging IL-6 mRNA production. The C-terminal region of STRAP is essential for this function.\",\n      \"method\": \"Co-immunoprecipitation, siRNA knockdown, overexpression, cytokine ELISA, Western blot, nuclear fractionation, mutant analysis\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — Co-IP defining complex, combined with KD and OE functional assays and nuclear translocation, C-terminal domain mapping\",\n      \"pmids\": [\"27934954\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"STRAP competitively disrupts association of PRC2 subunits EZH2 and SUZ12, thereby inhibiting PRC2 assembly. This antagonizes H3K27me3 formation at NOTCH pathway genes, leading to epigenetic activation of NOTCH signaling and maintenance of cancer stem-like cell subpopulations in colorectal cancer.\",\n      \"method\": \"Co-immunoprecipitation, ChIP for H3K27me3, STRAP silencing, NOTCH pathway rescue (lentiviral NICD1/HES1 expression), in vivo tumorigenesis model\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — Co-IP defining competitive disruption of PRC2, ChIP for epigenetic mark, and pathway rescue experiment in vivo\",\n      \"pmids\": [\"28827371\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"STRAP positively regulates TLR3-triggered signaling by acting as a scaffold protein that interacts with TBK1 and IRF3, enhancing IFN-β production. STRAP knockdown reduces pro-inflammatory cytokine and IFN levels in TLR3-agonist-stimulated macrophages; its C-terminus is essential for this activity.\",\n      \"method\": \"Co-immunoprecipitation, siRNA knockdown, overexpression, cytokine ELISA, mutant analysis\",\n      \"journal\": \"Cellular immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP plus functional KD and OE assays, single lab, consistent with PMID 27934954\",\n      \"pmids\": [\"28651742\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"STRAP interacts with MELK (maternal embryonic leucine zipper kinase) in Bax-positive colorectal cancer cells. Sanguinarine dephosphorylates STRAP and MELK and disrupts their association, triggering intrinsic (Bax-dependent) apoptosis with increased mitochondrial ROS and MOMP.\",\n      \"method\": \"Co-immunoprecipitation, immunofluorescence, in vitro kinase activity assay, Western blot, flow cytometry, orthotopic in vivo model\",\n      \"journal\": \"BMC cancer\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP plus kinase assay plus in vivo model, single lab\",\n      \"pmids\": [\"29783958\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"STRAP associates with Csde1 (Unr) in erythroblasts; Strap knockdown alters mRNA and/or protein expression of several Csde1-bound transcripts involved in translational regulation (including Hmbs, eIF4g3, Pabpc4, Vim, Elavl1) but does not alter the pool of transcripts bound by Csde1.\",\n      \"method\": \"Proteomics/Co-IP, RNA immunoprecipitation, siRNA knockdown, Western blot, qRT-PCR\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — RIP plus Co-IP plus targeted KD with multiple transcript readouts, single lab\",\n      \"pmids\": [\"30138317\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"During autophagy, TTC5/STRAP binds JMY (junction mediating and regulatory protein) and antagonizes JMY's actin nucleation activity, acting as a negative autophagy regulator. LC3 recruits JMY to the phagophore membrane and stimulates JMY-mediated actin filament assembly; an in vitro reconstitution system demonstrated that membrane-bound LC3 is sufficient for this recruitment and activation.\",\n      \"method\": \"Co-immunoprecipitation, in vitro actin reconstitution assay with membrane-bound LC3, autophagy functional assays\",\n      \"journal\": \"Autophagy\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro reconstitution of actin nucleation system with mechanistic antagonism by STRAP/TTC5 defined\",\n      \"pmids\": [\"30593260\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"STRAP is a spliceosome-associated factor involved in assembly of 17S U2 snRNP proteins. Upon Strap deletion in mouse embryoid bodies, numerous alternative splicing events occur particularly for nervous system development transcripts. STRAP preferably targets transcripts for nervous system development by eCLIP-seq and regulates alternative splicing through preferred binding positions on neuronal-specific gene transcripts (Nnat, Mark3). In Xenopus, loss of Strap impedes lineage differentiation, delays neural tube closure, and alters exon skipping.\",\n      \"method\": \"eCLIP-seq, Strap knockout in mouse embryoid bodies, RNA-seq for alternative splicing, Xenopus loss-of-function, U2 snRNP assembly assay\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — eCLIP-seq plus genetic KO in two model systems plus snRNP assembly functional validation, multiple orthogonal methods\",\n      \"pmids\": [\"33230114\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"STRAP (p49/STRAP) overexpression suppresses PGC-1α, mitofusin-1, and mitofusin-2 expression at mRNA and protein levels, reduces mitochondrial size, mitochondrial membrane potential, and oxygen consumption rate, and causes deacetylation of histone H4K16.\",\n      \"method\": \"Transgenic overexpression, Western blot, qRT-PCR, mitochondrial size measurement, oxygen consumption rate measurement, histone acetylation assay\",\n      \"journal\": \"Experimental gerontology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — functional overexpression with multiple mitochondrial readouts, single lab\",\n      \"pmids\": [\"27337995\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"SIRT7 deacetylates STRAP at lysines 147, 148, and 156; acetylation of these residues is written by CBP acetyltransferase. Hypo- or hyperacetylation mutations at these sites (3KR or 3KQ) influence STRAP-mediated activation and stabilization of p53. Following 5-FU treatment, STRAP is mobilized from cytoplasm to nucleus with enhanced acetylation.\",\n      \"method\": \"In vitro deacetylation assay, Co-IP, mutant analysis (3KR/3KQ), p53 activity assays, nuclear fractionation after drug treatment\",\n      \"journal\": \"International journal of molecular sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — biochemical acetylation assay plus mutant analysis with functional p53 readout, single lab\",\n      \"pmids\": [\"32527012\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"GDF5 increases expression of STRAP and NME1 in SH-SY5Y neuronal cells. Expression of both STRAP and NME1 is necessary and sufficient for promotion of neurite growth by GDF5 in SH-SY5Y cells.\",\n      \"method\": \"Proteomics, siRNA knockdown, overexpression, neurite growth assay, in vivo GDF5 overexpression in rat brain\",\n      \"journal\": \"iScience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KD and OE functional assays plus in vivo validation, single lab\",\n      \"pmids\": [\"32853992\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"circPCNXL2 directly binds STRAP and induces interaction between STRAP and MEK1/2, resulting in activation of ERK/MAPK pathways and tumor promotion in intrahepatic cholangiocarcinoma.\",\n      \"method\": \"RNA pulldown, mass spectrometry, RNA immunoprecipitation, luciferase reporter assay, Co-IP, xenograft model\",\n      \"journal\": \"Molecular cancer\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — RNA pulldown plus Co-IP defining circRNA-STRAP-MEK complex, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"38365721\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"The Csde1-Strap complex directly couples Bach2 mRNA decay with translation during B cell differentiation. Strap interacts with Csde1 and both bind Bach2 mRNA; in the absence of either protein, Bach2 translation is decoupled from mRNA decay, leading to elevated and prolonged Bach2 protein expression and impaired plasma cell differentiation.\",\n      \"method\": \"RNA interactome capture-coupled CRISPR/Cas9 functional screen, Co-IP, RNA-binding assay, polysome analysis, genetic KO of Csde1 and Strap\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — CRISPR screen plus Co-IP plus RNA-binding assay plus genetic KO defining molecular mechanism of mRNA decay-translation coupling\",\n      \"pmids\": [\"40133358\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"USP38 stabilizes STRAP via deubiquitination, thereby enhancing TGF-β/SMAD signaling. STRAP knockdown reverses the pro-fibrotic effects induced by USP38 overexpression in atrial cells.\",\n      \"method\": \"Co-immunoprecipitation, ubiquitination assay, immunofluorescence, cardiomyocyte-specific KO/TG mice, siRNA knockdown\",\n      \"journal\": \"Molecular medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP plus ubiquitination assay plus in vivo genetic models, single lab\",\n      \"pmids\": [\"40514673\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"iNOS mediates S-nitrosylation of STRAP specifically at Cys152 and Cys270 (the same residues required for STRAP-ASK1 interaction). S-nitrosylation of STRAP disrupts the STRAP-ASK1 interaction, increases ASK1 activity, activates the MKK3-p38 pathway, and enhances hydrogen peroxide-induced apoptosis. STRAP specifically interacts with iNOS but not with eNOS or nNOS.\",\n      \"method\": \"S-nitrosylation assay, Co-IP, mutant analysis (STRAP-C152/270S), ASK1 activity assay, Western blot for MKK3/p38 phosphorylation, apoptosis assay\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — biochemical S-nitrosylation assay with site-specific mutagenesis defining mechanistic pathway, single rigorous study\",\n      \"pmids\": [\"41519199\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"p49/STRAP interacts with the beta-sandwich domain of Hsp70, reduces the ATP-hydrolytic activity of Hsp70 stimulated by Hsp40, and inhibits the refolding activity of the Hsp70/Hsp40 system, functioning as a bona fide co-chaperone.\",\n      \"method\": \"Co-immunoprecipitation, ATPase assay, protein refolding assay, domain mapping\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro enzymatic assay (ATPase and refolding) plus Co-IP defining co-chaperone activity, single lab\",\n      \"pmids\": [\"19751705\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"p49/STRAP specifically interacts with an acidic motif (Q7IGSEDG) in the N-terminus of GLUT4 and co-localizes with GLUT4 and ER-resident protein calnexin in rat adipose cells. Overexpression of the GLUT4-binding domain of p49 reduces protein synthesis and cell-surface expression of GLUT4 but not GLUT8.\",\n      \"method\": \"Yeast two-hybrid, confocal immunofluorescence, mutant GLUT4 (ED/QN) analysis, cell-surface GLUT4 quantification\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — yeast two-hybrid plus co-localization plus functional expression assay, single lab\",\n      \"pmids\": [\"16647043\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"STRAP interacts with TBK1 to activate type I IFN signaling during pseudorabies virus (PRV) infection. Both the C-terminal and WD40 7-6 domains of STRAP contribute to this function. TBK1 competes with PRV-UL50 for binding to STRAP, and STRAP impedes the degradation of TBK1 mediated by PRV-UL50.\",\n      \"method\": \"Co-immunoprecipitation, domain mutant analysis, IFN reporter assay, competition binding assay\",\n      \"journal\": \"Virology journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP plus domain mapping plus competition binding assay, single lab\",\n      \"pmids\": [\"39182136\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"STRAP is a WD40/TPR-OB-fold scaffold protein that functions at multiple levels: it inhibits TGF-β signaling by recruiting Smad7 to stabilize its association with activated type I receptor (blocking Smad2/3 access); it modulates p53 activity by interacting with p53's DNA-binding domain (displacing Mdm2), and its nuclear accumulation and stability are controlled by ATM/Chk2 phosphorylation and CBP/SIRT7-mediated acetylation; it scaffolds the GSK3β/Axin complex to prevent β-catenin ubiquitylation and degradation, thereby enhancing Wnt signaling; it disrupts PRC2 (EZH2-SUZ12) assembly to epigenetically activate NOTCH target genes; it is a component of the SMN/U2 snRNP assembly complex (via Gemin6/7 interaction) and regulates alternative splicing; it tethers to collagen mRNAs via LARP6 to restrain eIF4A-dependent translation of α2(I) collagen; it co-assembles with Csde1 to couple Bach2 mRNA decay with translation; it antagonizes JMY-mediated actin nucleation during autophagy; it is S-nitrosylated by iNOS at Cys152/270 to release ASK1 and promote apoptosis; and it is deubiquitinated and stabilized by USP38.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"STRAP is a WD40/TPR-OB-fold scaffold protein that integrates signaling, transcriptional, and post-transcriptional control across multiple pathways, broadly favoring proliferation and tumorigenicity [#0, #4]. It was first defined as a negative regulator of TGF-\\u03b2 signaling: STRAP binds the type I and type II TGF-\\u03b2 receptors and, by recruiting and stabilizing Smad7 at the activated receptor, blocks Smad2/3 access and dampens TGF-\\u03b2 transcriptional responses [#0, #1]; loss of STRAP correspondingly increases Smad2/3 phosphorylation and TGF-\\u03b2-mediated growth inhibition while activating MEK/ERK signaling and downregulating p21(Cip1) [#4]. STRAP modulates the p53 tumor-suppressor axis by binding the p53 DNA-binding domain to displace Mdm2 and potentiate p53-dependent transcription and apoptosis [#5], an activity tuned by ATM/Chk2 phosphorylation that drives its nuclear accumulation and stability [#6] and by CBP/SIRT7-controlled acetylation [#28]; a high-resolution crystal structure established its atypical six-TPR architecture with an OB-fold domain that engages chromatin at p53 target genes [#12]. Beyond these axes, STRAP scaffolds the GSK3\\u03b2/Axin destruction complex to protect \\u03b2-catenin from ubiquitylation and enhance Wnt signaling and metastasis [#10, #19], disrupts EZH2\\u2013SUZ12 assembly to derepress NOTCH target genes and sustain cancer stem-like cells [#21], and acts as a scaffold in innate immune signaling by bridging TAK1/IKK\\u03b1/p65 and TBK1/IRF3 to promote NF-\\u03baB- and IFN-dependent cytokine production [#20, #22]. STRAP also has a conserved post-transcriptional role as a cytoplasmic component of the SMN complex that mediates spliceosomal snRNP assembly and regulates alternative splicing of nervous-system transcripts [#3, #26], restrains eIF4A-dependent translation of collagen \\u03b12(I) mRNA via LARP6 [#13], and couples Bach2 mRNA decay to translation with Csde1 during B-cell differentiation [#31]. It further controls apoptosis through redox-sensitive cysteines: iNOS-mediated S-nitrosylation at Cys152/270 releases ASK1 to activate p38 and promote apoptosis [#33].\",\n  \"teleology\": [\n    {\n      \"year\": 1998,\n      \"claim\": \"Established STRAP's founding identity by showing a WD40 protein physically associates with TGF-\\u03b2 receptors and inhibits their transcriptional output, defining a new receptor-proximal regulator.\",\n      \"evidence\": \"Yeast two-hybrid, co-IP and reporter assays with T\\u03b2R-I/T\\u03b2R-II\",\n      \"pmids\": [\"9856985\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism of inhibition not resolved at this stage\", \"No structural basis for receptor binding\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Resolved how STRAP inhibits TGF-\\u03b2 signaling, showing it synergizes with Smad7 to stabilize the Smad7-receptor complex and exclude Smad2/3.\",\n      \"evidence\": \"Co-IP, mutant analysis, in vivo phosphorylation, reporter assays\",\n      \"pmids\": [\"10757800\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Identity of the receptor-dependent kinase phosphorylating STRAP's C terminus\", \"Smad6 specificity basis unexplained\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Linked STRAP overexpression to oncogenic phenotypes, connecting it to MAPK activation and breast tumor biology.\",\n      \"evidence\": \"Overexpression, MAPK activity and anchorage-independent growth assays\",\n      \"pmids\": [\"10646843\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"MAPK activation mechanism not defined\", \"Correlative tumor overexpression without causal test\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Established a distinct post-transcriptional role by placing STRAP (unrip) in the cytoplasmic SMN complex required for snRNP assembly.\",\n      \"evidence\": \"Fractionation, co-IP, mass spec, snRNP assembly assay, RNAi, immunofluorescence across two labs\",\n      \"pmids\": [\"15848170\", \"16159890\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How STRAP partitions SMN between cytoplasm and gems mechanistically\", \"Direct RNA contacts not yet mapped\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Provided genetic loss-of-function evidence that STRAP restrains TGF-\\u03b2 growth inhibition and drives tumorigenicity via MEK/ERK and p21 downregulation.\",\n      \"evidence\": \"STRAP knockout MEFs, siRNA, pathway Western blots, soft agar, xenograft\",\n      \"pmids\": [\"16778189\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct link between STRAP and MEK/ERK activation not biochemically defined\", \"Nuclear function not addressed\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Defined a p53-activating function, showing STRAP binds the p53 DNA-binding domain via Cys152/270 and displaces Mdm2 to potentiate p53-dependent apoptosis.\",\n      \"evidence\": \"Co-IP, cysteine mutagenesis, reporter, apoptosis and growth assays, RNAi\",\n      \"pmids\": [\"17916563\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How a TGF-\\u03b2 inhibitor reconciles with p53 tumor-suppressor activation\", \"Stoichiometry of the p53/NM23-H1/STRAP complex\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Identified DNA-damage control of STRAP, showing ATM phosphorylation drives nuclear accumulation and Chk2 phosphorylation stabilizes the nuclear pool.\",\n      \"evidence\": \"Kinase assay, nuclear fractionation, export inhibition, mutant analysis\",\n      \"pmids\": [\"18833288\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Phosphosite identity for ATM/Chk2 not fully mapped\", \"Export machinery involved not identified\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Reported a metabolic link, with p49/STRAP binding NDUFAB1 and altering NAD/NADH ratio and SRF deacetylation.\",\n      \"evidence\": \"Yeast two-hybrid, co-IP, co-localization, NAD/NADH and deacetylation assays\",\n      \"pmids\": [\"18230186\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Mechanism connecting NDUFAB1 binding to NAD changes unclear\", \"Relationship to scaffold functions undefined\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Demonstrated a TGF-\\u03b2-independent role of STRAP in maintaining mesenchymal morphology via WT1/E-cadherin and \\u03b2-catenin localization.\",\n      \"evidence\": \"Knockout MEFs with rescue, expression profiling, immunofluorescence\",\n      \"pmids\": [\"19781628\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How STRAP represses E-cadherin mechanistically not yet shown here\", \"Link to Wnt signaling not yet established\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Defined an in vitro co-chaperone activity, with p49/STRAP binding Hsp70 and inhibiting Hsp70/Hsp40 refolding.\",\n      \"evidence\": \"Co-IP, ATPase assay, refolding assay, domain mapping\",\n      \"pmids\": [\"19751705\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Cellular relevance of chaperone inhibition untested\", \"Substrate clients not identified\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Connected STRAP to Wnt and Notch stability control, showing it forms a GSK3\\u03b2/Axin ternary complex and stabilizes ICN3 by reducing its ubiquitination.\",\n      \"evidence\": \"Co-IP, GSK3\\u03b2 inhibitor studies, in vivo ubiquitination, mutant analysis\",\n      \"pmids\": [\"21502811\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether STRAP acts catalytically or sterically on ubiquitination unclear\", \"Single-lab finding\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Resolved STRAP's architecture, revealing an atypical six-TPR fold with an OB-fold domain that engages chromatin at p53 targets.\",\n      \"evidence\": \"2.05 \\u00c5 crystal structure, ChIP, transcriptional assay\",\n      \"pmids\": [\"22362889\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of partner binding (Smad7, GSK3\\u03b2) not co-crystallized\", \"OB-fold nucleic-acid binding not directly demonstrated\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Established a translational control function, showing STRAP is tethered to collagen mRNAs via LARP6 and restrains eIF4A-dependent translation of collagen \\u03b12(I).\",\n      \"evidence\": \"RNA-IP, polysome profiling, co-IP, depletion/reconstitution\",\n      \"pmids\": [\"23918805\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether STRAP directly contacts eIF4A or acts via LARP6 not fully separated\", \"Generality beyond collagen mRNAs\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Defined an epigenetic gene-repression mechanism, with STRAP recruiting HDAC1 and blocking Sp1 to downregulate p21 and E-cadherin.\",\n      \"evidence\": \"Knockout/knockdown models, ChIP, ubiquitination assay, cell cycle analysis\",\n      \"pmids\": [\"25483064\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct STRAP-HDAC1 contact vs indirect recruitment unresolved\", \"How STRAP destabilizes Sp1 mechanistically\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Identified MPK38-mediated Ser188 phosphorylation as a redox-dependent switch promoting STRAP's pro-apoptotic functions.\",\n      \"evidence\": \"In vitro kinase assay, cysteine mutants, co-IP, inducible shRNA, in vivo delivery\",\n      \"pmids\": [\"25485581\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How Ser188 phosphorylation reroutes STRAP between pathways\", \"Physiological trigger for MPK38 engagement\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Revealed a mitochondrial role, with STRAP binding ATP synthase to suppress ATP production and sensitize cancer cells to apoptosis.\",\n      \"evidence\": \"Mitochondrial fractionation, co-IP, ATP and apoptosis assays, rescue\",\n      \"pmids\": [\"25168243\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How STRAP traffics to mitochondria unknown\", \"Subunit of ATP synthase bound not specified\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Consolidated the Wnt-enhancing mechanism, showing STRAP binds GSK-3\\u03b2 to block \\u03b2-catenin destruction-complex engagement and promote CRC metastasis.\",\n      \"evidence\": \"Co-IP, ubiquitination assay, knockdown/overexpression, in vivo metastasis\",\n      \"pmids\": [\"26910283\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Reconciliation with STRAP's epithelial-promoting roles in other contexts\", \"Direct vs scaffold-mediated GSK3\\u03b2 inhibition\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Defined STRAP as a scaffold in TLR2/4-NF-\\u03baB signaling, bridging TAK1, IKK\\u03b1 and p65 to drive cytokine production.\",\n      \"evidence\": \"Co-IP, siRNA, overexpression, cytokine ELISA, nuclear fractionation, mutant analysis\",\n      \"pmids\": [\"27934954\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of multi-kinase scaffolding\", \"Regulation of STRAP recruitment to the pathway\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Extended STRAP's epigenetic role, showing it competitively disrupts EZH2-SUZ12 to derepress NOTCH genes and sustain cancer stem-like cells.\",\n      \"evidence\": \"Co-IP, H3K27me3 ChIP, silencing, NOTCH rescue, in vivo tumorigenesis\",\n      \"pmids\": [\"28827371\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Which STRAP domain mediates PRC2 disruption\", \"Whether this competes with its TPR/OB chromatin functions\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Generalized the immune scaffold role to TLR3, showing STRAP bridges TBK1 and IRF3 to enhance IFN-\\u03b2 production.\",\n      \"evidence\": \"Co-IP, siRNA, overexpression, cytokine ELISA, mutant analysis\",\n      \"pmids\": [\"28651742\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct vs indirect TBK1/IRF3 binding\", \"Single-lab finding\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Coupled STRAP to mRNA translational regulation in erythroblasts via the Csde1 (Unr) complex.\",\n      \"evidence\": \"Proteomics/co-IP, RNA-IP, siRNA, Western blot, qRT-PCR\",\n      \"pmids\": [\"30138317\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Mechanism by which STRAP alters Csde1 target output without changing binding\", \"Direct RNA contacts of STRAP unmapped\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Defined STRAP/TTC5 as a negative autophagy regulator that antagonizes JMY-mediated actin nucleation at the phagophore.\",\n      \"evidence\": \"Co-IP, in vitro actin reconstitution with membrane-bound LC3, autophagy assays\",\n      \"pmids\": [\"30593260\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How STRAP binding inhibits JMY mechanistically\", \"Regulation of STRAP-JMY engagement during autophagy\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Defined STRAP as a spliceosome-associated U2 snRNP assembly factor regulating alternative splicing of nervous-system transcripts during development.\",\n      \"evidence\": \"eCLIP-seq, knockout in mouse embryoid bodies and Xenopus, RNA-seq, snRNP assembly assay\",\n      \"pmids\": [\"33230114\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How RNA-binding integrates with SMN-complex role\", \"Splice-site selection rules from eCLIP positions\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Identified acetylation control of STRAP, with CBP writing and SIRT7 erasing K147/148/156 marks that tune p53 activation and nuclear mobilization.\",\n      \"evidence\": \"In vitro deacetylation, co-IP, 3KR/3KQ mutants, p53 assays, fractionation after 5-FU\",\n      \"pmids\": [\"32527012\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Interplay with ATM/Chk2 phosphorylation control\", \"Single-lab finding\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Demonstrated that the Csde1-STRAP complex directly couples Bach2 mRNA decay with translation to enable plasma cell differentiation.\",\n      \"evidence\": \"RNA interactome-coupled CRISPR screen, co-IP, RNA-binding, polysome analysis, genetic KO\",\n      \"pmids\": [\"40133358\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Biochemical basis for decay-translation coupling\", \"Generality beyond Bach2 mRNA\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Defined redox regulation of STRAP-controlled apoptosis, with iNOS S-nitrosylating Cys152/270 to release ASK1 and activate p38.\",\n      \"evidence\": \"S-nitrosylation assay, co-IP, cysteine mutants, ASK1/MKK3/p38 readouts, apoptosis assay\",\n      \"pmids\": [\"41519199\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How the same cysteines coordinate p53, MPK38 and ASK1 functions\", \"Physiological iNOS-driven contexts in vivo\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How STRAP's many context-specific roles (TGF-\\u03b2 inhibition, p53 activation, Wnt/Notch enhancement, RNA processing, immune scaffolding) are selected within a single cell remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No unified model linking post-translational state (phospho/acetyl/S-nitrosyl) to pathway selection\", \"Limited structural data on partner-bound complexes\", \"Reconciliation of tumor-suppressive vs oncogenic activities\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [1, 20, 22]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [5, 19, 21]},\n      {\"term_id\": \"GO:0003723\", \"supporting_discovery_ids\": [13, 26, 31]},\n      {\"term_id\": \"GO:0045182\", \"supporting_discovery_ids\": [13, 31]},\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [12]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005829\", \"supporting_discovery_ids\": [3, 4]},\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [4, 6, 20]},\n      {\"term_id\": \"GO:0005739\", \"supporting_discovery_ids\": [17]},\n      {\"term_id\": \"GO:0000228\", \"supporting_discovery_ids\": [12, 15, 21]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [0, 1, 19]},\n      {\"term_id\": \"R-HSA-8953854\", \"supporting_discovery_ids\": [3, 26, 31]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [20, 22]},\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [5, 17, 33]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [15, 21]},\n      {\"term_id\": \"R-HSA-9612973\", \"supporting_discovery_ids\": [25]}\n    ],\n    \"complexes\": [\n      \"SMN complex\",\n      \"GSK3\\u03b2/Axin destruction complex\",\n      \"Csde1-STRAP mRNP\",\n      \"17S U2 snRNP assembly machinery\"\n    ],\n    \"partners\": [\n      \"SMAD7\",\n      \"TP53\",\n      \"GSK3B\",\n      \"LARP6\",\n      \"CSDE1\",\n      \"TBK1\",\n      \"EZH2\",\n      \"GEMIN7\"\n    ],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":6,"faith_total":6,"faith_pct":100.0}}