{"gene":"NAPA","run_date":"2026-06-10T05:19:52","timeline":{"discoveries":[{"year":2010,"finding":"NAPA, localized to the endoplasmic reticulum (ER), protects cancer cells against cisplatin-induced apoptosis. Knockdown of NAPA using shRNA induced ER stress, apoptosis, and enhanced cisplatin cytotoxicity, while overexpression of NAPA reduced cisplatin-induced ER stress and apoptosis. The protective effect required p53, as it was abolished in p53-null H1299 cells and reduced by the p53 inhibitor PFT-alpha. Combined cisplatin/shNAPA treatment suppressed tumor growth in vivo in xenograft experiments.","method":"shRNA knockdown, overexpression, cell viability/apoptosis assays, in vivo xenograft tumor model, p53 inhibitor rescue experiments","journal":"Biochemical pharmacology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean KD and OE with defined cellular phenotype, in vivo validation, p53 rescue, single lab with multiple orthogonal methods","pmids":["20653109"],"is_preprint":false},{"year":2011,"finding":"NAPA promotes cisplatin resistance by maintaining stability of the E3 ubiquitin ligase synoviolin within the ER-associated degradation (ERAD) complex, thereby facilitating p53 ubiquitination and degradation. Knockdown of NAPA induced ubiquitination and degradation of synoviolin, disrupted the synoviolin-ERAD complex interaction, and caused p53 accumulation. Conversely, NAPA overexpression decreased synoviolin ubiquitination and reduced p53 levels. ERK1/2 activation upon NAPA knockdown was identified as an upstream mediator of synoviolin ubiquitination, as ERK inhibition reversed synoviolin ubiquitination and p53 accumulation.","method":"shRNA knockdown, overexpression, co-immunoprecipitation, ubiquitination assays, ERK inhibitor rescue, p53-null cell lines","journal":"Biochemical pharmacology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal interaction assays, ubiquitination assays, pathway rescue with ERK inhibitor, single lab with multiple orthogonal methods","pmids":["21903092"],"is_preprint":false},{"year":2011,"finding":"The Epstein-Barr virus oncoprotein LMP1 downregulates NAPA expression by upregulating NF-κB p50, which forms p50 homodimers on the NAPA promoter to repress transcription. This NAPA repression sensitizes LMP1-expressing cells to cisplatin-induced apoptosis. Restoration of NAPA expression reversed LMP1-mediated cisplatin sensitization, and antisense knockdown of LMP1 restored NAPA protein levels and cisplatin resistance.","method":"LMP1 expression/knockdown (antisense oligonucleotides), NAPA overexpression rescue, NF-κB p50 chromatin binding on NAPA promoter, cisplatin apoptosis assays","journal":"Biochemical pharmacology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — transcriptional regulation of NAPA by NF-κB p50 homodimers demonstrated by promoter binding, rescue experiments, single lab with multiple orthogonal methods","pmids":["21945668"],"is_preprint":false}],"current_model":"Human NAPA (an ER-localized SNARE/trafficking protein) promotes resistance to the DNA-damaging drug cisplatin by maintaining the stability of the E3 ubiquitin ligase synoviolin within the ERAD complex, thereby driving p53 ubiquitination and degradation; loss of NAPA activates ERK1/2 signaling that destabilizes synoviolin, leading to p53 accumulation and apoptosis, while NAPA expression is itself transcriptionally repressed by NF-κB p50 homodimers induced downstream of EBV LMP1."},"narrative":{"mechanistic_narrative":"NAPA is an endoplasmic reticulum-localized protein that promotes cancer cell resistance to cisplatin-induced apoptosis through a p53-dependent mechanism [PMID:20653109]. Mechanistically, NAPA maintains the stability of the E3 ubiquitin ligase synoviolin within the ER-associated degradation (ERAD) complex; by preserving synoviolin, NAPA drives p53 ubiquitination and degradation, keeping p53 levels low and suppressing apoptosis [PMID:21903092]. Loss of NAPA activates ERK1/2 signaling, which promotes synoviolin ubiquitination and degradation, disrupts its association with the ERAD complex, and leads to p53 accumulation and apoptosis [PMID:21903092]. NAPA expression is itself transcriptionally repressed: the Epstein-Barr virus oncoprotein LMP1 induces NF-κB p50, which binds the NAPA promoter as a homodimer to repress transcription, thereby sensitizing LMP1-expressing cells to cisplatin [PMID:21945668]. Beyond this cisplatin-resistance axis, no further mechanistic detail for NAPA has been characterized in the available corpus.","teleology":[{"year":2010,"claim":"Established that NAPA functions in cancer cell survival rather than only housekeeping trafficking, by linking it to suppression of cisplatin-induced ER stress and apoptosis through p53.","evidence":"shRNA knockdown, overexpression, apoptosis/viability assays, xenograft tumor model, and p53 inhibitor/p53-null rescue in cancer cells","pmids":["20653109"],"confidence":"Medium","gaps":["Did not define the molecular target through which NAPA controls p53","Mechanism connecting ER localization to p53 regulation unresolved","Single-lab phenotype without independent replication"]},{"year":2011,"claim":"Defined the molecular mechanism: NAPA stabilizes the ERAD E3 ligase synoviolin to drive p53 ubiquitination/degradation, with ERK1/2 acting as the destabilizing signal when NAPA is lost.","evidence":"co-immunoprecipitation, ubiquitination assays, ERK inhibitor rescue, and p53-null cell lines","pmids":["21903092"],"confidence":"Medium","gaps":["How NAPA physically protects synoviolin from ubiquitination not structurally defined","Mechanism by which NAPA loss activates ERK1/2 unknown","Reciprocal validation of the synoviolin-ERAD interaction limited to one lab"]},{"year":2011,"claim":"Placed NAPA downstream of viral oncogenic signaling, showing it is transcriptionally repressed by LMP1-induced NF-κB p50 homodimers, which determines chemosensitivity.","evidence":"LMP1 expression/antisense knockdown, NAPA overexpression rescue, NF-κB p50 promoter binding, and cisplatin apoptosis assays","pmids":["21945668"],"confidence":"Medium","gaps":["Promoter element and p50 binding site not finely mapped","Whether other stimuli regulate NAPA transcription unknown","Generality beyond LMP1-expressing cells untested"]},{"year":null,"claim":"Whether NAPA's canonical membrane-trafficking/SNARE function intersects with its role in synoviolin stability and p53 control remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No structural or biochemical mechanism linking NAPA to synoviolin protection","No characterization outside the cisplatin-resistance context in the corpus"]}],"mechanism_profile":{"molecular_activity":[],"localization":[{"term_id":"GO:0005783","term_label":"endoplasmic reticulum","supporting_discovery_ids":[0]}],"pathway":[{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[1]},{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[0,1]}],"complexes":["ERAD complex"],"partners":["SYVN1"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"P54920","full_name":"Alpha-soluble NSF attachment protein","aliases":["N-ethylmaleimide-sensitive factor attachment protein alpha"],"length_aa":295,"mass_kda":33.2,"function":"Required for vesicular transport between the endoplasmic reticulum and the Golgi apparatus (Probable). Together with GNA12 promotes CDH5 localization to plasma membrane (PubMed:15980433)","subcellular_location":"Cell membrane","url":"https://www.uniprot.org/uniprotkb/P54920/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":true,"resolved_as":"","url":"https://depmap.org/portal/gene/NAPA","classification":"Common 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VTI1A","url":"https://www.omim.org/entry/614316"},{"mim_id":"610955","title":"TRAFFICKING PROTEIN PARTICLE COMPLEX, SUBUNIT 3; TRAPPC3","url":"https://www.omim.org/entry/610955"},{"mim_id":"606046","title":"SYNTAXIN 18; STX18","url":"https://www.omim.org/entry/606046"},{"mim_id":"605631","title":"NAPSIN A; NAPSA","url":"https://www.omim.org/entry/605631"},{"mim_id":"604394","title":"GUANINE NUCLEOTIDE-BINDING PROTEIN, ALPHA-12; GNA12","url":"https://www.omim.org/entry/604394"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Uncertain","locations":[{"location":"Cytosol","reliability":"Uncertain"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/NAPA"},"hgnc":{"alias_symbol":[],"prev_symbol":[]},"alphafold":{"accession":"P54920","domains":[{"cath_id":"1.25.40.10","chopping":"2-220","consensus_level":"medium","plddt":90.608,"start":2,"end":220}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/P54920","model_url":"https://alphafold.ebi.ac.uk/files/AF-P54920-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-P54920-F1-predicted_aligned_error_v6.png","plddt_mean":89.12},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=NAPA","jax_strain_url":"https://www.jax.org/strain/search?query=NAPA"},"sequence":{"accession":"P54920","fasta_url":"https://rest.uniprot.org/uniprotkb/P54920.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/P54920/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/P54920"}},"corpus_meta":[{"pmid":"17400770","id":"PMC_17400770","title":"Diversity and abundance of nitrate reductase 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Section D, Biological crystallography","url":"https://pubmed.ncbi.nlm.nih.gov/11717511","citation_count":4,"is_preprint":false},{"pmid":"39425777","id":"PMC_39425777","title":"Assessing the effects of NapA gene overexpression on denitrification and denitrogenation in magnetospirillum gryphiswaldense MSR-1.","date":"2024","source":"Archives of microbiology","url":"https://pubmed.ncbi.nlm.nih.gov/39425777","citation_count":3,"is_preprint":false},{"pmid":"40274147","id":"PMC_40274147","title":"Peroxiredoxin PrxA and thioredoxin TrxA mediate the redox signal to the transcription factor NapA in the fungus Aspergillus nidulans.","date":"2025","source":"International journal of biological macromolecules","url":"https://pubmed.ncbi.nlm.nih.gov/40274147","citation_count":3,"is_preprint":false},{"pmid":"33206969","id":"PMC_33206969","title":"Agrobacterium fabrum C58 involved nitrate reductase NapA and antisense RNA NorR to denitrify.","date":"2020","source":"FEMS microbiology ecology","url":"https://pubmed.ncbi.nlm.nih.gov/33206969","citation_count":2,"is_preprint":false},{"pmid":"1694066","id":"PMC_1694066","title":"Precocious expression of NAPA-73, an intermediate filament-associated protein, during nervous system and heart development in the chicken embryo.","date":"1990","source":"Annals of the New York Academy of Sciences","url":"https://pubmed.ncbi.nlm.nih.gov/1694066","citation_count":2,"is_preprint":false},{"pmid":"30425813","id":"PMC_30425813","title":"Designing a novel ELISA method based on CagA, NapA recombinant antigens to increase sensitivity and specificity of Helicobacter pylori whole cell antigen detection.","date":"2018","source":"Gastroenterology and hepatology from bed to bench","url":"https://pubmed.ncbi.nlm.nih.gov/30425813","citation_count":2,"is_preprint":false},{"pmid":"35028298","id":"PMC_35028298","title":"Transient recombinant expression of highly immunogenic CagA, VacA and NapA in Nicotiana benthamiana.","date":"2021","source":"Biotechnology reports (Amsterdam, Netherlands)","url":"https://pubmed.ncbi.nlm.nih.gov/35028298","citation_count":1,"is_preprint":false},{"pmid":"37814124","id":"PMC_37814124","title":"The bZIP-type transcription factors NapA and RsmA modulate the volumetric ratio and the relative superoxide ratio of mitochondria in Aspergillus nidulans.","date":"2023","source":"Biologia futura","url":"https://pubmed.ncbi.nlm.nih.gov/37814124","citation_count":1,"is_preprint":false},{"pmid":"17488595","id":"PMC_17488595","title":"[Clone, expression and immunoreaction of napA gene of Helicobacter pylori].","date":"2007","source":"Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology","url":"https://pubmed.ncbi.nlm.nih.gov/17488595","citation_count":1,"is_preprint":false},{"pmid":"41106805","id":"PMC_41106805","title":"Structural Studies on the M. tuberculosis Nucleoid-associated-Protein, NapA, Indicates DNA Bridging Mechanism.","date":"2025","source":"Journal of molecular biology","url":"https://pubmed.ncbi.nlm.nih.gov/41106805","citation_count":0,"is_preprint":false},{"pmid":"41771431","id":"PMC_41771431","title":"Expression, purification and biochemical characterization of the periplasmic nitrate reductase NapA from Magnetospirillum gryphiswaldense MSR-1.","date":"2026","source":"Protein expression and purification","url":"https://pubmed.ncbi.nlm.nih.gov/41771431","citation_count":0,"is_preprint":false},{"pmid":"39372087","id":"PMC_39372087","title":"Membrane Physiology Symposium April 22nd-23rd, 2024, Napa California, USA.","date":"2024","source":"Bioelectricity","url":"https://pubmed.ncbi.nlm.nih.gov/39372087","citation_count":0,"is_preprint":false},{"pmid":"37676017","id":"PMC_37676017","title":"Complete genome sequence of Pectobacterium brasiliense strain 21PCA_AGRO2 with antimicrobial resistance isolated from napa cabbage.","date":"2023","source":"Microbiology resource announcements","url":"https://pubmed.ncbi.nlm.nih.gov/37676017","citation_count":0,"is_preprint":false},{"pmid":"42219900","id":"PMC_42219900","title":"In vitro exposure to non-antipseudomonal antibiotics (NAPA) induces Pseudomonas aeruginosa resistance to antipseudomonal antibiotics (APA).","date":"2026","source":"The Journal of antimicrobial chemotherapy","url":"https://pubmed.ncbi.nlm.nih.gov/42219900","citation_count":0,"is_preprint":false},{"pmid":null,"id":"bio_10.1101_2025.09.24.678188","title":"N-acetyl-phenylalanine induces hepatic steatosis in MASLD by disrupting ER-mitochondria calcium coupling and mitochondrial lipid oxidation","date":"2025-09-26","source":"bioRxiv","url":"https://doi.org/10.1101/2025.09.24.678188","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2025.11.03.686416","title":"Genomic prediction for general combining ability in hybrid canola (  <i>Brassica napa</i>  L.)","date":"2025-11-04","source":"bioRxiv","url":"https://doi.org/10.1101/2025.11.03.686416","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2025.11.26.690687","title":"Hierarchical taxonomic constraints shape bacterial nitrogen cycling across functional and molecular scales","date":"2025-11-29","source":"bioRxiv","url":"https://doi.org/10.1101/2025.11.26.690687","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2025.04.02.646891","title":"Leveraging foundation models to dissect the genetic basis of cluster compactness and yield in grapevine","date":"2025-04-08","source":"bioRxiv","url":"https://doi.org/10.1101/2025.04.02.646891","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2025.02.26.640368","title":"Sediments from a seasonally euxinic coastal ecosystem show high nitrogen cycling potential","date":"2025-02-26","source":"bioRxiv","url":"https://doi.org/10.1101/2025.02.26.640368","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2024.12.17.628941","title":"The invasions of  <i>Aedes aegypti</i>  and  <i>Aedes albopictus</i>  in Cyprus: current situation, risk modelling and public health implications for the wider Eastern Mediterranean region","date":"2024-12-20","source":"bioRxiv","url":"https://doi.org/10.1101/2024.12.17.628941","citation_count":0,"is_preprint":true}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":36766,"output_tokens":1406,"usd":0.065694,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":7679,"output_tokens":1609,"usd":0.03931,"stage2_stop_reason":"end_turn"},"total_usd":0.105004,"stage1_batch_id":"msgbatch_013a8chtv3AWyTqv4z4sEF4C","stage2_batch_id":"msgbatch_01AHsuW63vinsvuTgzmQ3n62","note":"batch pricing = 50% of standard"},"stage1_raw":"Looking at the corpus, I need to identify which papers are about the human/mammalian gene NAPA (also known as NSF attachment protein alpha, or α-SNAP — a SNARE complex protein involved in vesicular trafficking and ER function).\n\nScanning the abstracts:\n- Papers 23, 24, 34 describe NAPA as an ER SNARE protein with anti-apoptotic properties in cancer cells — this matches the human NAPA gene (α-SNAP/NAPA).\n- Papers about bacterial NapA (nitrate reductase), Helicobacter pylori NapA (neutrophil-activating protein), Borrelia NapA, Aspergillus NapA (bZIP TF), Brassica napA (storage protein promoter), NAPA-73 (avian intermediate filament protein), NaPa (sodium phenylacetate), Na+/H+ antiporter NapA, Mycobacterium NapA, etc. are all symbol collisions or unrelated proteins.\n- Paper 66 (preprint) describes NAPA as N-acetyl-phenylalanine — a metabolite, not the SNARE protein. This is a different molecule entirely.\n\nOnly papers 23, 24, and 34 describe mechanistic findings about the human NAPA SNARE protein.\n\n```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2010,\n      \"finding\": \"NAPA, localized to the endoplasmic reticulum (ER), protects cancer cells against cisplatin-induced apoptosis. Knockdown of NAPA using shRNA induced ER stress, apoptosis, and enhanced cisplatin cytotoxicity, while overexpression of NAPA reduced cisplatin-induced ER stress and apoptosis. The protective effect required p53, as it was abolished in p53-null H1299 cells and reduced by the p53 inhibitor PFT-alpha. Combined cisplatin/shNAPA treatment suppressed tumor growth in vivo in xenograft experiments.\",\n      \"method\": \"shRNA knockdown, overexpression, cell viability/apoptosis assays, in vivo xenograft tumor model, p53 inhibitor rescue experiments\",\n      \"journal\": \"Biochemical pharmacology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean KD and OE with defined cellular phenotype, in vivo validation, p53 rescue, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"20653109\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"NAPA promotes cisplatin resistance by maintaining stability of the E3 ubiquitin ligase synoviolin within the ER-associated degradation (ERAD) complex, thereby facilitating p53 ubiquitination and degradation. Knockdown of NAPA induced ubiquitination and degradation of synoviolin, disrupted the synoviolin-ERAD complex interaction, and caused p53 accumulation. Conversely, NAPA overexpression decreased synoviolin ubiquitination and reduced p53 levels. ERK1/2 activation upon NAPA knockdown was identified as an upstream mediator of synoviolin ubiquitination, as ERK inhibition reversed synoviolin ubiquitination and p53 accumulation.\",\n      \"method\": \"shRNA knockdown, overexpression, co-immunoprecipitation, ubiquitination assays, ERK inhibitor rescue, p53-null cell lines\",\n      \"journal\": \"Biochemical pharmacology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal interaction assays, ubiquitination assays, pathway rescue with ERK inhibitor, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"21903092\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"The Epstein-Barr virus oncoprotein LMP1 downregulates NAPA expression by upregulating NF-κB p50, which forms p50 homodimers on the NAPA promoter to repress transcription. This NAPA repression sensitizes LMP1-expressing cells to cisplatin-induced apoptosis. Restoration of NAPA expression reversed LMP1-mediated cisplatin sensitization, and antisense knockdown of LMP1 restored NAPA protein levels and cisplatin resistance.\",\n      \"method\": \"LMP1 expression/knockdown (antisense oligonucleotides), NAPA overexpression rescue, NF-κB p50 chromatin binding on NAPA promoter, cisplatin apoptosis assays\",\n      \"journal\": \"Biochemical pharmacology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — transcriptional regulation of NAPA by NF-κB p50 homodimers demonstrated by promoter binding, rescue experiments, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"21945668\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"Human NAPA (an ER-localized SNARE/trafficking protein) promotes resistance to the DNA-damaging drug cisplatin by maintaining the stability of the E3 ubiquitin ligase synoviolin within the ERAD complex, thereby driving p53 ubiquitination and degradation; loss of NAPA activates ERK1/2 signaling that destabilizes synoviolin, leading to p53 accumulation and apoptosis, while NAPA expression is itself transcriptionally repressed by NF-κB p50 homodimers induced downstream of EBV LMP1.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"NAPA is an endoplasmic reticulum-localized protein that promotes cancer cell resistance to cisplatin-induced apoptosis through a p53-dependent mechanism [#0]. Mechanistically, NAPA maintains the stability of the E3 ubiquitin ligase synoviolin within the ER-associated degradation (ERAD) complex; by preserving synoviolin, NAPA drives p53 ubiquitination and degradation, keeping p53 levels low and suppressing apoptosis [#1]. Loss of NAPA activates ERK1/2 signaling, which promotes synoviolin ubiquitination and degradation, disrupts its association with the ERAD complex, and leads to p53 accumulation and apoptosis [#1]. NAPA expression is itself transcriptionally repressed: the Epstein-Barr virus oncoprotein LMP1 induces NF-\\u03baB p50, which binds the NAPA promoter as a homodimer to repress transcription, thereby sensitizing LMP1-expressing cells to cisplatin [#2]. Beyond this cisplatin-resistance axis, no further mechanistic detail for NAPA has been characterized in the available corpus.\",\n  \"teleology\": [\n    {\n      \"year\": 2010,\n      \"claim\": \"Established that NAPA functions in cancer cell survival rather than only housekeeping trafficking, by linking it to suppression of cisplatin-induced ER stress and apoptosis through p53.\",\n      \"evidence\": \"shRNA knockdown, overexpression, apoptosis/viability assays, xenograft tumor model, and p53 inhibitor/p53-null rescue in cancer cells\",\n      \"pmids\": [\"20653109\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Did not define the molecular target through which NAPA controls p53\",\n        \"Mechanism connecting ER localization to p53 regulation unresolved\",\n        \"Single-lab phenotype without independent replication\"\n      ]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Defined the molecular mechanism: NAPA stabilizes the ERAD E3 ligase synoviolin to drive p53 ubiquitination/degradation, with ERK1/2 acting as the destabilizing signal when NAPA is lost.\",\n      \"evidence\": \"co-immunoprecipitation, ubiquitination assays, ERK inhibitor rescue, and p53-null cell lines\",\n      \"pmids\": [\"21903092\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"How NAPA physically protects synoviolin from ubiquitination not structurally defined\",\n        \"Mechanism by which NAPA loss activates ERK1/2 unknown\",\n        \"Reciprocal validation of the synoviolin-ERAD interaction limited to one lab\"\n      ]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Placed NAPA downstream of viral oncogenic signaling, showing it is transcriptionally repressed by LMP1-induced NF-\\u03baB p50 homodimers, which determines chemosensitivity.\",\n      \"evidence\": \"LMP1 expression/antisense knockdown, NAPA overexpression rescue, NF-\\u03baB p50 promoter binding, and cisplatin apoptosis assays\",\n      \"pmids\": [\"21945668\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Promoter element and p50 binding site not finely mapped\",\n        \"Whether other stimuli regulate NAPA transcription unknown\",\n        \"Generality beyond LMP1-expressing cells untested\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"Whether NAPA's canonical membrane-trafficking/SNARE function intersects with its role in synoviolin stability and p53 control remains unresolved.\",\n      \"evidence\": null,\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"No structural or biochemical mechanism linking NAPA to synoviolin protection\",\n        \"No characterization outside the cisplatin-resistance context in the corpus\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [],\n    \"localization\": [\n      {\"term_id\": \"GO:0005783\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [1]},\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [0, 1]}\n    ],\n    \"complexes\": [\"ERAD complex\"],\n    \"partners\": [\"SYVN1\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"tie","faith_supported":4,"faith_total":4,"faith_pct":100.0}}