{"gene":"BORCS6","run_date":"2026-06-09T22:02:45","timeline":{"discoveries":[{"year":2015,"finding":"C17orf59 (BORCS6) was identified as a Ragulator-interacting protein that inhibits mTORC1 by preventing Ragulator interaction with the Rag GTPases, both in cells and in vitro, thereby decreasing Rag GTPase lysosomal localization and impairing mTOR recruitment to the lysosome upon amino acid stimulation.","method":"Co-immunoprecipitation, in vitro binding assays, lysosomal fractionation, mTORC1 activity assays","journal":"Cell reports","confidence":"High","confidence_rationale":"Tier 1–2 / Moderate — in vitro reconstitution of Ragulator-C17orf59 interaction combined with cellular epistasis experiments and lysosomal localization assays, single lab but multiple orthogonal methods","pmids":["26299971"],"is_preprint":false},{"year":2021,"finding":"BORCS6, as a subunit of the BORC complex, is required for normal lamellar body (LB) morphology in lung alveolar epithelial type II cells; KO of BORCS6 (but not other BORC subunit genes) in A549 cells caused LB enlargement, implicating a specific LRRK2-BORCS6 pathway in LB maintenance.","method":"CRISPR/KO of BORCS6 in A549 cells, proteomic analysis of isolated LBs from Lrrk2 KO mice, LRRK2 inhibitor treatment, bronchoalveolar lavage fluid analysis","journal":"Human molecular genetics","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean KO with defined cellular phenotype, proteomic validation, single lab with multiple orthogonal approaches","pmids":["34077533"],"is_preprint":false},{"year":2022,"finding":"Borcs6 is required for efficient endo-lysosomal degradation in early mouse embryos; loss of Borcs6 results in accumulation of late endosomes, abnormal nuclei, skewed embryonic/extraembryonic lineage ratios, developmental delay, and failure of gastrulation, attributed primarily to defects in BORC's HOPS-related fusion function rather than lysosomal positioning.","method":"Genetic KO mouse model, embryo phenotyping, immunofluorescence for endosomal/lysosomal markers, lineage analysis","journal":"Molecular reproduction and development","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function in vivo with defined cellular and developmental phenotypes, single lab, multiple readouts including lineage analysis and organelle markers","pmids":["35726782"],"is_preprint":false},{"year":2019,"finding":"BORCS6 expression is significantly induced in human CD4+ T cells upon short-term cold exposure, and by interfering with mTOR activation at lysosomal surfaces (via its role as a Ragulator-interacting inhibitor of mTORC1), C17orf59/BORCS6 improves the Treg induction capacity of human naïve T cells.","method":"qRT-PCR, multicolor flow cytometry, in vitro Treg induction assays, humanized mouse model with beta3-adrenergic stimulation, human clinical samples (FREECE study)","journal":"Molecular metabolism","confidence":"Low","confidence_rationale":"Tier 3 / Weak — expression induction confirmed, but mechanistic link to mTOR/Treg is inferred from prior data (PMID 26299971) rather than directly demonstrated in this study; single lab, no direct mTOR activity measurement reported in the abstract","pmids":["31427184"],"is_preprint":false},{"year":2023,"finding":"SARS-CoV-2 ORF3a recruits BORCS6 and ARL8B to lysosomes, initiating anterograde transport of the virus to the plasma membrane for viral egress.","method":"Mechanistic characterization of ORF3a interactions (as described in review/analysis of ORF3a functions)","journal":"Journal of medical virology","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single paper, review-style description of mechanism; abstract does not detail the specific experimental methods used to establish BORCS6 recruitment; indirect evidence for BORCS6 function in this context","pmids":["37485696"],"is_preprint":false}],"current_model":"BORCS6 (C17orf59) is a subunit of the BORC complex that inhibits mTORC1 by binding Ragulator and competitively blocking its interaction with the Rag GTPases, thereby preventing mTOR recruitment to the lysosome; it also participates in BORC-dependent endo-lysosomal fusion and lysosomal trafficking, with loss-of-function causing lamellar body enlargement in lung epithelial cells and failure of endo-lysosomal degradation during early embryonic development."},"narrative":{"mechanistic_narrative":"BORCS6 (C17orf59) is a subunit of the BORC complex that couples lysosomal positioning and fusion to mTORC1 signaling [PMID:26299971, PMID:34077533]. It binds Ragulator and competitively blocks Ragulator's interaction with the Rag GTPases, thereby reducing Rag GTPase localization to the lysosome and impairing amino acid–stimulated recruitment and activation of mTORC1 at the lysosomal surface [PMID:26299971]. As a BORC subunit, BORCS6 supports endo-lysosomal trafficking and fusion: loss of BORCS6 causes accumulation of late endosomes and failure of endo-lysosomal degradation during early mouse embryonic development, with the degradation defect attributed to BORC's HOPS-related fusion function rather than to lysosomal positioning [PMID:35726782]. BORCS6 is also specifically required for normal lamellar body morphology in lung alveolar epithelial type II cells, where its loss causes lamellar body enlargement [PMID:34077533]. Beyond these roles in mTORC1 inhibition and endo-lysosomal maintenance, no further molecular mechanism for BORCS6 has been characterized in the available corpus.","teleology":[{"year":2015,"claim":"Established the founding molecular function of BORCS6 by showing it is a Ragulator-binding inhibitor of mTORC1, defining a negative regulatory node at the lysosomal surface where amino acid signaling is integrated.","evidence":"Co-immunoprecipitation, in vitro binding assays, lysosomal fractionation, and mTORC1 activity assays in cells","pmids":["26299971"],"confidence":"High","gaps":["Structural basis of the Ragulator–BORCS6 interaction not resolved","Physiological conditions that regulate BORCS6 expression or recruitment not defined here","Relationship between this mTORC1-inhibitory role and BORC complex assembly not addressed"]},{"year":2021,"claim":"Connected BORCS6 to a tissue-specific organelle phenotype, showing it is selectively required (unlike other BORC subunits) for lamellar body morphology in lung type II cells.","evidence":"CRISPR KO of BORCS6 in A549 cells, proteomics of lamellar bodies from Lrrk2 KO mice, LRRK2 inhibitor treatment, and bronchoalveolar lavage analysis","pmids":["34077533"],"confidence":"Medium","gaps":["Molecular mechanism linking BORCS6 to lamellar body size not established","Why other BORC subunits are dispensable for this phenotype unexplained","Direct biochemical interaction between LRRK2 and BORCS6 not demonstrated"]},{"year":2022,"claim":"Defined an in vivo developmental requirement for BORCS6, showing it drives endo-lysosomal degradation needed for normal early embryogenesis via BORC's fusion function.","evidence":"Genetic KO mouse model with embryo phenotyping, endosomal/lysosomal marker immunofluorescence, and lineage analysis","pmids":["35726782"],"confidence":"Medium","gaps":["Direct evidence distinguishing fusion versus positioning contributions is inferential","HOPS-related fusion partners of BORC in this context not identified","Whether mTORC1 dysregulation contributes to the embryonic phenotype not tested"]},{"year":2019,"claim":"Suggested a physiological setting for BORCS6's mTORC1-inhibitory role, linking its cold-induced expression in T cells to enhanced regulatory T cell induction.","evidence":"qRT-PCR, flow cytometry, in vitro Treg induction assays, humanized mouse model, and human clinical samples","pmids":["31427184"],"confidence":"Low","gaps":["Mechanistic link to mTOR/Treg is inferred from prior work rather than directly demonstrated, with no direct mTOR activity measurement reported","Causal role of BORCS6 induction in Treg outcomes not established by loss-of-function","Single study, single lab"]},{"year":2023,"claim":"Raised a potential role for BORCS6 in viral egress, describing SARS-CoV-2 ORF3a recruitment of BORCS6 and ARL8B to drive anterograde lysosomal transport.","evidence":"Review-style mechanistic description of ORF3a interactions","pmids":["37485696"],"confidence":"Low","gaps":["Specific experimental methods establishing BORCS6 recruitment not detailed; evidence is indirect","Direct ORF3a–BORCS6 binding not shown","Functional requirement of BORCS6 for viral egress not tested by perturbation"]},{"year":null,"claim":"How BORCS6's dual roles in mTORC1 inhibition and BORC-dependent lysosomal fusion/positioning are coordinated, and the structural basis of its Ragulator and BORC interactions, remain unresolved.","evidence":"","pmids":[],"confidence":"Low","gaps":["No structural model of BORCS6 within Ragulator or BORC","Mechanism integrating mTORC1 regulation with endo-lysosomal fusion unknown","Tissue-specific functional differences across cell types not mechanistically explained"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[0]},{"term_id":"GO:0060090","term_label":"molecular adaptor activity","supporting_discovery_ids":[0]}],"localization":[{"term_id":"GO:0005764","term_label":"lysosome","supporting_discovery_ids":[0,1]},{"term_id":"GO:0005768","term_label":"endosome","supporting_discovery_ids":[2]}],"pathway":[{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[0]},{"term_id":"R-HSA-5653656","term_label":"Vesicle-mediated transport","supporting_discovery_ids":[2]}],"complexes":["BORC"],"partners":["RAGULATOR","ARL8B"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q96GS4","full_name":"BLOC-1-related complex subunit 6","aliases":["Lysosome-dispersing protein","Lyspersin"],"length_aa":357,"mass_kda":37.2,"function":"As part of the BORC complex may play a role in lysosomes movement and localization at the cell periphery. Associated with the cytosolic face of lysosomes, the BORC complex may recruit ARL8B and couple lysosomes to microtubule plus-end-directed kinesin motor","subcellular_location":"Lysosome membrane","url":"https://www.uniprot.org/uniprotkb/Q96GS4/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/BORCS6","classification":"Not Classified","n_dependent_lines":1,"n_total_lines":1208,"dependency_fraction":0.0008278145695364238},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/BORCS6","total_profiled":1310},"omim":[{"mim_id":"616601","title":"BLOC1-RELATED COMPLEX, SUBUNIT 8; BORCS8","url":"https://www.omim.org/entry/616601"},{"mim_id":"616600","title":"BLOC1-RELATED COMPLEX, SUBUNIT 7; BORCS7","url":"https://www.omim.org/entry/616600"},{"mim_id":"616599","title":"BLOC1-RELATED COMPLEX, SUBUNIT 6; BORCS6","url":"https://www.omim.org/entry/616599"},{"mim_id":"616598","title":"BLOC1-RELATED COMPLEX, SUBUNIT 5; BORCS5","url":"https://www.omim.org/entry/616598"},{"mim_id":"608521","title":"LATE ENDOSOMAL/LYSOSOMAL ADAPTOR, MAPK AND MTOR ACTIVATOR 5; LAMTOR5","url":"https://www.omim.org/entry/608521"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Approved","locations":[{"location":"Golgi apparatus","reliability":"Approved"},{"location":"Vesicles","reliability":"Approved"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/BORCS6"},"hgnc":{"alias_symbol":["FLJ20014"],"prev_symbol":["C17orf59"]},"alphafold":{"accession":"Q96GS4","domains":[{"cath_id":"1.20.5","chopping":"263-330","consensus_level":"medium","plddt":98.4606,"start":263,"end":330}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q96GS4","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q96GS4-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q96GS4-F1-predicted_aligned_error_v6.png","plddt_mean":65.38},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=BORCS6","jax_strain_url":"https://www.jax.org/strain/search?query=BORCS6"},"sequence":{"accession":"Q96GS4","fasta_url":"https://rest.uniprot.org/uniprotkb/Q96GS4.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q96GS4/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q96GS4"}},"corpus_meta":[{"pmid":"28877454","id":"PMC_28877454","title":"A Stat6/Pten Axis Links Regulatory T Cells with Adipose Tissue Function.","date":"2017","source":"Cell metabolism","url":"https://pubmed.ncbi.nlm.nih.gov/28877454","citation_count":79,"is_preprint":false},{"pmid":"26299971","id":"PMC_26299971","title":"Disruption of the Rag-Ragulator Complex by c17orf59 Inhibits mTORC1.","date":"2015","source":"Cell reports","url":"https://pubmed.ncbi.nlm.nih.gov/26299971","citation_count":29,"is_preprint":false},{"pmid":"31427184","id":"PMC_31427184","title":"Short-term cold exposure supports human Treg induction in vivo.","date":"2019","source":"Molecular metabolism","url":"https://pubmed.ncbi.nlm.nih.gov/31427184","citation_count":19,"is_preprint":false},{"pmid":"37485696","id":"PMC_37485696","title":"Regulation of autophagy by SARS-CoV-2: The multifunctional contributions of ORF3a.","date":"2023","source":"Journal of medical virology","url":"https://pubmed.ncbi.nlm.nih.gov/37485696","citation_count":19,"is_preprint":false},{"pmid":"34077533","id":"PMC_34077533","title":"BORCS6 is involved in the enlargement of lung lamellar bodies in Lrrk2 knockout mice.","date":"2021","source":"Human molecular genetics","url":"https://pubmed.ncbi.nlm.nih.gov/34077533","citation_count":10,"is_preprint":false},{"pmid":"32253346","id":"PMC_32253346","title":"Molecular Topology of RNA Polymerase I Upstream Activation Factor.","date":"2020","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/32253346","citation_count":8,"is_preprint":false},{"pmid":"35726782","id":"PMC_35726782","title":"Borcs6 is required for endo-lysosomal degradation during early development.","date":"2022","source":"Molecular reproduction and development","url":"https://pubmed.ncbi.nlm.nih.gov/35726782","citation_count":6,"is_preprint":false},{"pmid":"40084164","id":"PMC_40084164","title":"Integration of whole genome resequencing and transcriptome sequencing to identify candidate genes for tall and short traits in Baicheng Fatty chickens.","date":"2025","source":"Frontiers in veterinary science","url":"https://pubmed.ncbi.nlm.nih.gov/40084164","citation_count":1,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":6047,"output_tokens":1382,"usd":0.019436,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":8031,"output_tokens":2318,"usd":0.049052,"stage2_stop_reason":"end_turn"},"total_usd":0.068488,"stage1_batch_id":"msgbatch_0179Z2pxRYBsXi2xADneafRw","stage2_batch_id":"msgbatch_01LaY9ZaVdgjWArcZo9eqQE5","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2015,\n      \"finding\": \"C17orf59 (BORCS6) was identified as a Ragulator-interacting protein that inhibits mTORC1 by preventing Ragulator interaction with the Rag GTPases, both in cells and in vitro, thereby decreasing Rag GTPase lysosomal localization and impairing mTOR recruitment to the lysosome upon amino acid stimulation.\",\n      \"method\": \"Co-immunoprecipitation, in vitro binding assays, lysosomal fractionation, mTORC1 activity assays\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Moderate — in vitro reconstitution of Ragulator-C17orf59 interaction combined with cellular epistasis experiments and lysosomal localization assays, single lab but multiple orthogonal methods\",\n      \"pmids\": [\"26299971\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"BORCS6, as a subunit of the BORC complex, is required for normal lamellar body (LB) morphology in lung alveolar epithelial type II cells; KO of BORCS6 (but not other BORC subunit genes) in A549 cells caused LB enlargement, implicating a specific LRRK2-BORCS6 pathway in LB maintenance.\",\n      \"method\": \"CRISPR/KO of BORCS6 in A549 cells, proteomic analysis of isolated LBs from Lrrk2 KO mice, LRRK2 inhibitor treatment, bronchoalveolar lavage fluid analysis\",\n      \"journal\": \"Human molecular genetics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean KO with defined cellular phenotype, proteomic validation, single lab with multiple orthogonal approaches\",\n      \"pmids\": [\"34077533\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Borcs6 is required for efficient endo-lysosomal degradation in early mouse embryos; loss of Borcs6 results in accumulation of late endosomes, abnormal nuclei, skewed embryonic/extraembryonic lineage ratios, developmental delay, and failure of gastrulation, attributed primarily to defects in BORC's HOPS-related fusion function rather than lysosomal positioning.\",\n      \"method\": \"Genetic KO mouse model, embryo phenotyping, immunofluorescence for endosomal/lysosomal markers, lineage analysis\",\n      \"journal\": \"Molecular reproduction and development\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function in vivo with defined cellular and developmental phenotypes, single lab, multiple readouts including lineage analysis and organelle markers\",\n      \"pmids\": [\"35726782\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"BORCS6 expression is significantly induced in human CD4+ T cells upon short-term cold exposure, and by interfering with mTOR activation at lysosomal surfaces (via its role as a Ragulator-interacting inhibitor of mTORC1), C17orf59/BORCS6 improves the Treg induction capacity of human naïve T cells.\",\n      \"method\": \"qRT-PCR, multicolor flow cytometry, in vitro Treg induction assays, humanized mouse model with beta3-adrenergic stimulation, human clinical samples (FREECE study)\",\n      \"journal\": \"Molecular metabolism\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — expression induction confirmed, but mechanistic link to mTOR/Treg is inferred from prior data (PMID 26299971) rather than directly demonstrated in this study; single lab, no direct mTOR activity measurement reported in the abstract\",\n      \"pmids\": [\"31427184\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"SARS-CoV-2 ORF3a recruits BORCS6 and ARL8B to lysosomes, initiating anterograde transport of the virus to the plasma membrane for viral egress.\",\n      \"method\": \"Mechanistic characterization of ORF3a interactions (as described in review/analysis of ORF3a functions)\",\n      \"journal\": \"Journal of medical virology\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single paper, review-style description of mechanism; abstract does not detail the specific experimental methods used to establish BORCS6 recruitment; indirect evidence for BORCS6 function in this context\",\n      \"pmids\": [\"37485696\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"BORCS6 (C17orf59) is a subunit of the BORC complex that inhibits mTORC1 by binding Ragulator and competitively blocking its interaction with the Rag GTPases, thereby preventing mTOR recruitment to the lysosome; it also participates in BORC-dependent endo-lysosomal fusion and lysosomal trafficking, with loss-of-function causing lamellar body enlargement in lung epithelial cells and failure of endo-lysosomal degradation during early embryonic development.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"BORCS6 (C17orf59) is a subunit of the BORC complex that couples lysosomal positioning and fusion to mTORC1 signaling [#0, #1]. It binds Ragulator and competitively blocks Ragulator's interaction with the Rag GTPases, thereby reducing Rag GTPase localization to the lysosome and impairing amino acid–stimulated recruitment and activation of mTORC1 at the lysosomal surface [#0]. As a BORC subunit, BORCS6 supports endo-lysosomal trafficking and fusion: loss of BORCS6 causes accumulation of late endosomes and failure of endo-lysosomal degradation during early mouse embryonic development, with the degradation defect attributed to BORC's HOPS-related fusion function rather than to lysosomal positioning [#2]. BORCS6 is also specifically required for normal lamellar body morphology in lung alveolar epithelial type II cells, where its loss causes lamellar body enlargement [#1]. Beyond these roles in mTORC1 inhibition and endo-lysosomal maintenance, no further molecular mechanism for BORCS6 has been characterized in the available corpus.\",\n  \"teleology\": [\n    {\n      \"year\": 2015,\n      \"claim\": \"Established the founding molecular function of BORCS6 by showing it is a Ragulator-binding inhibitor of mTORC1, defining a negative regulatory node at the lysosomal surface where amino acid signaling is integrated.\",\n      \"evidence\": \"Co-immunoprecipitation, in vitro binding assays, lysosomal fractionation, and mTORC1 activity assays in cells\",\n      \"pmids\": [\"26299971\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"Structural basis of the Ragulator–BORCS6 interaction not resolved\",\n        \"Physiological conditions that regulate BORCS6 expression or recruitment not defined here\",\n        \"Relationship between this mTORC1-inhibitory role and BORC complex assembly not addressed\"\n      ]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Connected BORCS6 to a tissue-specific organelle phenotype, showing it is selectively required (unlike other BORC subunits) for lamellar body morphology in lung type II cells.\",\n      \"evidence\": \"CRISPR KO of BORCS6 in A549 cells, proteomics of lamellar bodies from Lrrk2 KO mice, LRRK2 inhibitor treatment, and bronchoalveolar lavage analysis\",\n      \"pmids\": [\"34077533\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Molecular mechanism linking BORCS6 to lamellar body size not established\",\n        \"Why other BORC subunits are dispensable for this phenotype unexplained\",\n        \"Direct biochemical interaction between LRRK2 and BORCS6 not demonstrated\"\n      ]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Defined an in vivo developmental requirement for BORCS6, showing it drives endo-lysosomal degradation needed for normal early embryogenesis via BORC's fusion function.\",\n      \"evidence\": \"Genetic KO mouse model with embryo phenotyping, endosomal/lysosomal marker immunofluorescence, and lineage analysis\",\n      \"pmids\": [\"35726782\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Direct evidence distinguishing fusion versus positioning contributions is inferential\",\n        \"HOPS-related fusion partners of BORC in this context not identified\",\n        \"Whether mTORC1 dysregulation contributes to the embryonic phenotype not tested\"\n      ]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Suggested a physiological setting for BORCS6's mTORC1-inhibitory role, linking its cold-induced expression in T cells to enhanced regulatory T cell induction.\",\n      \"evidence\": \"qRT-PCR, flow cytometry, in vitro Treg induction assays, humanized mouse model, and human clinical samples\",\n      \"pmids\": [\"31427184\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"Mechanistic link to mTOR/Treg is inferred from prior work rather than directly demonstrated, with no direct mTOR activity measurement reported\",\n        \"Causal role of BORCS6 induction in Treg outcomes not established by loss-of-function\",\n        \"Single study, single lab\"\n      ]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Raised a potential role for BORCS6 in viral egress, describing SARS-CoV-2 ORF3a recruitment of BORCS6 and ARL8B to drive anterograde lysosomal transport.\",\n      \"evidence\": \"Review-style mechanistic description of ORF3a interactions\",\n      \"pmids\": [\"37485696\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"Specific experimental methods establishing BORCS6 recruitment not detailed; evidence is indirect\",\n        \"Direct ORF3a–BORCS6 binding not shown\",\n        \"Functional requirement of BORCS6 for viral egress not tested by perturbation\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How BORCS6's dual roles in mTORC1 inhibition and BORC-dependent lysosomal fusion/positioning are coordinated, and the structural basis of its Ragulator and BORC interactions, remain unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"No structural model of BORCS6 within Ragulator or BORC\",\n        \"Mechanism integrating mTORC1 regulation with endo-lysosomal fusion unknown\",\n        \"Tissue-specific functional differences across cell types not mechanistically explained\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005764\", \"supporting_discovery_ids\": [0, 1]},\n      {\"term_id\": \"GO:0005768\", \"supporting_discovery_ids\": [2]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"R-HSA-5653656\", \"supporting_discovery_ids\": [2]}\n    ],\n    \"complexes\": [\"BORC\"],\n    \"partners\": [\"Ragulator\", \"ARL8B\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":4,"faith_total":4,"faith_pct":100.0}}