{"gene":"YIPF1","run_date":"2026-06-11T09:02:06","timeline":{"discoveries":[{"year":2017,"finding":"YIPF1 localizes to the medial-/trans-Golgi and partially to the trans-Golgi network (TGN), as determined by immunofluorescence staining; upon brefeldin A treatment, YIPF1 co-migrates with medial-/trans-Golgi and TGN markers before redistributing to cytoplasmic puncta distinct from these compartments.","method":"Immunofluorescence staining and brefeldin A treatment with marker co-localization","journal":"Experimental cell research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct localization experiment with functional context, single lab, two orthogonal approaches (steady-state IF and BFA dynamics)","pmids":["28286305"],"is_preprint":false},{"year":2017,"finding":"YIPF6 forms a stable complex separately with YIPF1, and knockdown of YIPF6 reduces YIPF1 protein levels, indicating that YIPF6 is required for stable expression and Golgi localization of YIPF1.","method":"Co-immunoprecipitation and siRNA knockdown with western blot","journal":"Experimental cell research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal complex formation shown by Co-IP plus functional consequence (reduced protein levels) upon knockdown, single lab","pmids":["28286305"],"is_preprint":false},{"year":2017,"finding":"Knockdown of YIPF1 (but not YIPF6) markedly delays reassembly of the Golgi apparatus after brefeldin A washout, demonstrating a role for YIPF1 in Golgi reassembly.","method":"siRNA knockdown followed by brefeldin A washout assay with Golgi marker imaging","journal":"Experimental cell research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean KD with defined cellular phenotype (delayed Golgi reassembly), single lab, supported by complementary YIPF6-KD control showing opposing effect","pmids":["28286305"],"is_preprint":false},{"year":2017,"finding":"Knockdown of YIPF1 reduces intracellular glycans in HT-29 cells, establishing a role for YIPF1 in supporting normal glycan synthesis.","method":"siRNA knockdown with intracellular glycan measurement","journal":"Experimental cell research","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single lab, single method, functional phenotype without detailed molecular mechanism","pmids":["28286305"],"is_preprint":false}],"current_model":"YIPF1 is a Yip domain family protein that localizes to the medial-/trans-Golgi and TGN, where it forms a stable complex with YIPF6 (required for YIPF1 stability and localization); YIPF1 is functionally required for Golgi reassembly after BFA-induced disassembly and for normal intracellular glycan synthesis."},"narrative":{"mechanistic_narrative":"YIPF1 is a Yip-domain Golgi membrane protein that supports Golgi structural integrity and secretory glycosylation [PMID:28286305]. It localizes to the medial-/trans-Golgi and partially to the trans-Golgi network, co-migrating with these compartments upon brefeldin A treatment before redistributing to distinct cytoplasmic puncta [PMID:28286305]. YIPF1 forms a stable complex with YIPF6, which is required for YIPF1 protein stability and Golgi localization, as YIPF6 knockdown reduces YIPF1 levels [PMID:28286305]. Functionally, depletion of YIPF1 markedly delays Golgi reassembly following brefeldin A washout, a phenotype not produced by YIPF6 knockdown, and reduces intracellular glycans, linking YIPF1 to Golgi recovery and normal glycan synthesis [PMID:28286305]. Beyond these localization and loss-of-function phenotypes, no further molecular mechanism for YIPF1 has been characterized in the available corpus.","teleology":[{"year":2017,"claim":"Establishing where YIPF1 resides was the first step in assigning it a compartment-specific function; this placed it at the medial-/trans-Golgi and TGN and showed it behaves as a bona fide Golgi-resident under membrane perturbation.","evidence":"Immunofluorescence with Golgi/TGN marker co-localization and brefeldin A redistribution dynamics","pmids":["28286305"],"confidence":"Medium","gaps":["Single lab, single cell context for steady-state localization","Does not define the membrane topology or trafficking itinerary of YIPF1","Identity of the post-BFA cytoplasmic puncta unresolved"]},{"year":2017,"claim":"Whether YIPF1 acts alone or within a complex was unknown; reciprocal Co-IP and knockdown showed it partners with YIPF6 in a relationship where YIPF6 stabilizes YIPF1, defining a co-dependent complex.","evidence":"Co-immunoprecipitation and siRNA knockdown with western blot in cultured cells","pmids":["28286305"],"confidence":"Medium","gaps":["Stoichiometry and direct binding interface not defined","Whether other YIPF family members participate in the complex untested","Mechanism by which YIPF6 confers YIPF1 stability unknown"]},{"year":2017,"claim":"The cellular requirement for YIPF1 was addressed by loss-of-function: its depletion delayed Golgi reassembly after BFA washout, assigning YIPF1 a specific role in Golgi recovery distinct from YIPF6.","evidence":"siRNA knockdown followed by brefeldin A washout assay with Golgi marker imaging","pmids":["28286305"],"confidence":"Medium","gaps":["Molecular step in reassembly that requires YIPF1 not identified","Steady-state Golgi structure effects versus reassembly-specific effects not separated"]},{"year":2017,"claim":"Connecting YIPF1 to secretory output, its knockdown reduced intracellular glycans, linking the protein to normal glycan synthesis.","evidence":"siRNA knockdown with intracellular glycan measurement in HT-29 cells","pmids":["28286305"],"confidence":"Low","gaps":["Single lab, single method without detailed molecular mechanism","Whether the glycan defect is a direct consequence or secondary to disrupted Golgi structure is unresolved","Specific glycosyltransferases or substrates affected not identified"]},{"year":null,"claim":"The biochemical activity of YIPF1 — whether it acts as a cargo receptor, membrane organizer, or regulator of Golgi enzymes — remains undefined.","evidence":"","pmids":[],"confidence":"Low","gaps":["No molecular activity assigned to YIPF1","No structural model of the YIPF1-YIPF6 complex","Direct trafficking cargo or enzyme partners unidentified"]}],"mechanism_profile":{"molecular_activity":[],"localization":[{"term_id":"GO:0005794","term_label":"Golgi apparatus","supporting_discovery_ids":[0]}],"pathway":[{"term_id":"R-HSA-5653656","term_label":"Vesicle-mediated transport","supporting_discovery_ids":[2]}],"complexes":[],"partners":["YIPF6"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q9Y548","full_name":"Protein YIPF1","aliases":["YIP1 family member 1"],"length_aa":306,"mass_kda":34.3,"function":"","subcellular_location":"Golgi apparatus, cis-Golgi network membrane; Golgi apparatus, trans-Golgi network membrane; Late endosome membrane","url":"https://www.uniprot.org/uniprotkb/Q9Y548/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/YIPF1","classification":"Not Classified","n_dependent_lines":0,"n_total_lines":1208,"dependency_fraction":0.0},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/YIPF1","total_profiled":1310},"omim":[{"mim_id":"617522","title":"YIP1 DOMAIN FAMILY, MEMBER 2; YIPF2","url":"https://www.omim.org/entry/617522"},{"mim_id":"617521","title":"YIP1 DOMAIN FAMILY, MEMBER 1; YIPF1","url":"https://www.omim.org/entry/617521"},{"mim_id":"300996","title":"YIP1 DOMAIN FAMILY, MEMBER 6; YIPF6","url":"https://www.omim.org/entry/300996"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Golgi apparatus","reliability":"Supported"},{"location":"Nucleoplasm","reliability":"Additional"},{"location":"Plasma membrane","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/YIPF1"},"hgnc":{"alias_symbol":["DJ167A19.1","FinGER1","Yip5a","YIPFbeta3A"],"prev_symbol":[]},"alphafold":{"accession":"Q9Y548","domains":[{"cath_id":"-","chopping":"118-283","consensus_level":"high","plddt":93.4888,"start":118,"end":283}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y548","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y548-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y548-F1-predicted_aligned_error_v6.png","plddt_mean":76.81},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=YIPF1","jax_strain_url":"https://www.jax.org/strain/search?query=YIPF1"},"sequence":{"accession":"Q9Y548","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9Y548.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9Y548/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y548"}},"corpus_meta":[{"pmid":"11927605","id":"PMC_11927605","title":"Muscle-specific RING finger-1 interacts with titin to regulate sarcomeric M-line and thick filament structure and may have nuclear functions via its interaction with glucocorticoid modulatory element binding protein-1.","date":"2002","source":"The Journal of cell biology","url":"https://pubmed.ncbi.nlm.nih.gov/11927605","citation_count":200,"is_preprint":false},{"pmid":"19498199","id":"PMC_19498199","title":"Cardiac muscle ring finger-1 increases susceptibility to heart failure in vivo.","date":"2009","source":"Circulation research","url":"https://pubmed.ncbi.nlm.nih.gov/19498199","citation_count":86,"is_preprint":false},{"pmid":"22312013","id":"PMC_22312013","title":"A critical role for muscle ring finger-1 in acute lung injury-associated skeletal muscle wasting.","date":"2012","source":"American journal of respiratory and critical care medicine","url":"https://pubmed.ncbi.nlm.nih.gov/22312013","citation_count":78,"is_preprint":false},{"pmid":"17075880","id":"PMC_17075880","title":"Mice with mutations in Mahogunin ring finger-1 (Mgrn1) exhibit abnormal patterning of the left-right axis.","date":"2006","source":"Developmental dynamics : an official publication of the American Association of Anatomists","url":"https://pubmed.ncbi.nlm.nih.gov/17075880","citation_count":44,"is_preprint":false},{"pmid":"30734268","id":"PMC_30734268","title":"Hydrogen sulfide regulates muscle RING finger-1 protein S-sulfhydration at Cys44 to prevent cardiac structural damage in diabetic cardiomyopathy.","date":"2019","source":"British journal of pharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/30734268","citation_count":42,"is_preprint":false},{"pmid":"19737927","id":"PMC_19737927","title":"Mahogunin ring finger-1 (MGRN1) E3 ubiquitin ligase inhibits signaling from melanocortin receptor by competition with Galphas.","date":"2009","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/19737927","citation_count":42,"is_preprint":false},{"pmid":"29507119","id":"PMC_29507119","title":"VASCULAR PLANT ONE-ZINC FINGER1 (VOZ1) and VOZ2 Interact with CONSTANS and Promote Photoperiodic Flowering Transition.","date":"2018","source":"Plant physiology","url":"https://pubmed.ncbi.nlm.nih.gov/29507119","citation_count":40,"is_preprint":false},{"pmid":"23490068","id":"PMC_23490068","title":"Prostaglandin E2 induces transcription of skeletal muscle mass regulators interleukin-6 and muscle RING finger-1 in humans.","date":"2013","source":"Prostaglandins, leukotrienes, and essential fatty acids","url":"https://pubmed.ncbi.nlm.nih.gov/23490068","citation_count":39,"is_preprint":false},{"pmid":"23756845","id":"PMC_23756845","title":"Mahogunin ring finger-1 (MGRN1) suppresses chaperone-associated misfolded protein aggregation and toxicity.","date":"2013","source":"Scientific reports","url":"https://pubmed.ncbi.nlm.nih.gov/23756845","citation_count":36,"is_preprint":false},{"pmid":"18495781","id":"PMC_18495781","title":"Myeloid cell differentiation in response to calcitriol for expression CD11b and CD14 is regulated by myeloid zinc finger-1 protein downstream of phosphatidylinositol 3-kinase.","date":"2008","source":"Journal of leukocyte biology","url":"https://pubmed.ncbi.nlm.nih.gov/18495781","citation_count":28,"is_preprint":false},{"pmid":"14966113","id":"PMC_14966113","title":"p68RacGAP is a novel GTPase-activating protein that interacts with vascular endothelial zinc finger-1 and modulates endothelial cell capillary formation.","date":"2004","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/14966113","citation_count":27,"is_preprint":false},{"pmid":"17065414","id":"PMC_17065414","title":"Tumour necrosis factor blockade did not prevent the increase of muscular muscle RING finger-1 and muscle atrophy F-box in arthritic rats.","date":"2006","source":"The Journal of endocrinology","url":"https://pubmed.ncbi.nlm.nih.gov/17065414","citation_count":25,"is_preprint":false},{"pmid":"24425758","id":"PMC_24425758","title":"Muscle RING finger-1 attenuates IGF-I-dependent cardiomyocyte hypertrophy by inhibiting JNK signaling.","date":"2014","source":"American journal of physiology. Endocrinology and metabolism","url":"https://pubmed.ncbi.nlm.nih.gov/24425758","citation_count":24,"is_preprint":false},{"pmid":"26255182","id":"PMC_26255182","title":"Mahogunin Ring Finger-1 (MGRN1), a Multifaceted Ubiquitin Ligase: Recent Unraveling of Neurobiological Mechanisms.","date":"2015","source":"Molecular neurobiology","url":"https://pubmed.ncbi.nlm.nih.gov/26255182","citation_count":22,"is_preprint":false},{"pmid":"28325996","id":"PMC_28325996","title":"Non-targeted metabolomics analysis of cardiac Muscle Ring Finger-1 (MuRF1), MuRF2, and MuRF3 in vivo reveals novel and redundant metabolic changes.","date":"2014","source":"Metabolomics : Official journal of the Metabolomic Society","url":"https://pubmed.ncbi.nlm.nih.gov/28325996","citation_count":19,"is_preprint":false},{"pmid":"30622337","id":"PMC_30622337","title":"Release of transcriptional repression via ErbB2-induced, SUMO-directed phosphorylation of myeloid zinc finger-1 serine 27 activates lysosome redistribution and invasion.","date":"2019","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/30622337","citation_count":18,"is_preprint":false},{"pmid":"29396433","id":"PMC_29396433","title":"Let-7 microRNA controls invasion-promoting lysosomal changes via the oncogenic transcription factor myeloid zinc finger-1.","date":"2018","source":"Oncogenesis","url":"https://pubmed.ncbi.nlm.nih.gov/29396433","citation_count":17,"is_preprint":false},{"pmid":"17083490","id":"PMC_17083490","title":"Characterization of Mahogunin Ring Finger-1 expression in mice.","date":"2006","source":"Pigment cell research","url":"https://pubmed.ncbi.nlm.nih.gov/17083490","citation_count":15,"is_preprint":false},{"pmid":"21828340","id":"PMC_21828340","title":"Cardiac proteasome activity in muscle ring finger-1 null mice at rest and following synthetic glucocorticoid treatment.","date":"2011","source":"American journal of physiology. Endocrinology and metabolism","url":"https://pubmed.ncbi.nlm.nih.gov/21828340","citation_count":15,"is_preprint":false},{"pmid":"28286305","id":"PMC_28286305","title":"YIPF1, YIPF2, and YIPF6 are medial-/trans-Golgi and trans-Golgi network-localized Yip domain family proteins, which play a role in the Golgi reassembly and glycan synthesis.","date":"2017","source":"Experimental cell research","url":"https://pubmed.ncbi.nlm.nih.gov/28286305","citation_count":13,"is_preprint":false},{"pmid":"36359861","id":"PMC_36359861","title":"Hydrogen Sulfide Regulates SERCA2a Ubiquitylation via Muscle RING Finger-1 S-Sulfhydration to Affect Cardiac Contractility in db/db Mice.","date":"2022","source":"Cells","url":"https://pubmed.ncbi.nlm.nih.gov/36359861","citation_count":13,"is_preprint":false},{"pmid":"30612292","id":"PMC_30612292","title":"Neuroprotective activity of leukemia inhibitory factor is relayed through myeloid zinc finger-1 in a rat model of stroke.","date":"2019","source":"Metabolic brain disease","url":"https://pubmed.ncbi.nlm.nih.gov/30612292","citation_count":11,"is_preprint":false},{"pmid":"36504647","id":"PMC_36504647","title":"The accumulation of muscle RING finger-1 in regenerating myofibers: Implications for muscle repair in immune-mediated necrotizing myopathy.","date":"2022","source":"Frontiers in neurology","url":"https://pubmed.ncbi.nlm.nih.gov/36504647","citation_count":6,"is_preprint":false},{"pmid":"24811453","id":"PMC_24811453","title":"Muscle RING finger-1 promotes a maladaptive phenotype in chronic hypoxia-induced right ventricular remodeling.","date":"2014","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/24811453","citation_count":6,"is_preprint":false},{"pmid":"31301870","id":"PMC_31301870","title":"Myeloid zinc finger-1 regulates expression of cancer-associated fibroblast and cancer stemness profiles in breast cancer.","date":"2019","source":"Surgery","url":"https://pubmed.ncbi.nlm.nih.gov/31301870","citation_count":4,"is_preprint":false},{"pmid":"41606616","id":"PMC_41606616","title":"Muscle RING finger-1 facilitates skeletal muscle regeneration via regulating myoblast proliferation and differentiation.","date":"2026","source":"Journal of translational medicine","url":"https://pubmed.ncbi.nlm.nih.gov/41606616","citation_count":0,"is_preprint":false},{"pmid":"30241514","id":"PMC_30241514","title":"Muscle-specific regulation of right ventricular transcriptional responses to chronic hypoxia-induced hypertrophy by the muscle ring finger-1 (MuRF1) ubiquitin ligase in mice.","date":"2018","source":"BMC medical genetics","url":"https://pubmed.ncbi.nlm.nih.gov/30241514","citation_count":0,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":17372,"output_tokens":1279,"usd":0.035651,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":7322,"output_tokens":1708,"usd":0.039655,"stage2_stop_reason":"end_turn"},"total_usd":0.075306,"stage1_batch_id":"msgbatch_01UT1AahFPCAyn2uVweS7A9z","stage2_batch_id":"msgbatch_01HuKWtKNT4Pqj1bc8eEP5RV","note":"batch pricing = 50% of standard"},"stage1_raw":"Looking at the 27 papers, I need to identify which ones are actually about YIPF1 (also known as DJ167A19.1, FinGER1, Yip5a, YIPFbeta3A).\n\nThe vast majority of papers are about completely different genes:\n- Papers 1-3, 5, 8, 12-13, 15, 19, 21, 23-24, 26-27: About MuRF1 (TRIM63) - a muscle RING finger protein, unrelated to YIPF1\n- Papers 4, 9, 14, 18: About MGRN1 (Mahogunin Ring Finger-1) - unrelated\n- Papers 6, 16, 17, 25: About MZF1 (Myeloid Zinc Finger 1) - unrelated\n- Paper 7: About VOZ1/VOZ2 in Arabidopsis - plant gene, unrelated\n- Paper 10: About MZF-1 in myeloid differentiation - unrelated\n- Paper 11: About p68RacGAP and VEZF1 - unrelated\n- Paper 22: About MZF-1 in stroke - unrelated\n\n**Paper 20** is the only paper actually about YIPF1: \"YIPF1, YIPF2, and YIPF6 are medial-/trans-Golgi and trans-Golgi network-localized Yip domain family proteins, which play a role in the Golgi reassembly and glycan synthesis\" (PMID: 28286305).\n\n```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2017,\n      \"finding\": \"YIPF1 localizes to the medial-/trans-Golgi and partially to the trans-Golgi network (TGN), as determined by immunofluorescence staining; upon brefeldin A treatment, YIPF1 co-migrates with medial-/trans-Golgi and TGN markers before redistributing to cytoplasmic puncta distinct from these compartments.\",\n      \"method\": \"Immunofluorescence staining and brefeldin A treatment with marker co-localization\",\n      \"journal\": \"Experimental cell research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct localization experiment with functional context, single lab, two orthogonal approaches (steady-state IF and BFA dynamics)\",\n      \"pmids\": [\"28286305\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"YIPF6 forms a stable complex separately with YIPF1, and knockdown of YIPF6 reduces YIPF1 protein levels, indicating that YIPF6 is required for stable expression and Golgi localization of YIPF1.\",\n      \"method\": \"Co-immunoprecipitation and siRNA knockdown with western blot\",\n      \"journal\": \"Experimental cell research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal complex formation shown by Co-IP plus functional consequence (reduced protein levels) upon knockdown, single lab\",\n      \"pmids\": [\"28286305\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Knockdown of YIPF1 (but not YIPF6) markedly delays reassembly of the Golgi apparatus after brefeldin A washout, demonstrating a role for YIPF1 in Golgi reassembly.\",\n      \"method\": \"siRNA knockdown followed by brefeldin A washout assay with Golgi marker imaging\",\n      \"journal\": \"Experimental cell research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean KD with defined cellular phenotype (delayed Golgi reassembly), single lab, supported by complementary YIPF6-KD control showing opposing effect\",\n      \"pmids\": [\"28286305\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Knockdown of YIPF1 reduces intracellular glycans in HT-29 cells, establishing a role for YIPF1 in supporting normal glycan synthesis.\",\n      \"method\": \"siRNA knockdown with intracellular glycan measurement\",\n      \"journal\": \"Experimental cell research\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single lab, single method, functional phenotype without detailed molecular mechanism\",\n      \"pmids\": [\"28286305\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"YIPF1 is a Yip domain family protein that localizes to the medial-/trans-Golgi and TGN, where it forms a stable complex with YIPF6 (required for YIPF1 stability and localization); YIPF1 is functionally required for Golgi reassembly after BFA-induced disassembly and for normal intracellular glycan synthesis.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"YIPF1 is a Yip-domain Golgi membrane protein that supports Golgi structural integrity and secretory glycosylation [#0, #2]. It localizes to the medial-/trans-Golgi and partially to the trans-Golgi network, co-migrating with these compartments upon brefeldin A treatment before redistributing to distinct cytoplasmic puncta [#0]. YIPF1 forms a stable complex with YIPF6, which is required for YIPF1 protein stability and Golgi localization, as YIPF6 knockdown reduces YIPF1 levels [#1]. Functionally, depletion of YIPF1 markedly delays Golgi reassembly following brefeldin A washout, a phenotype not produced by YIPF6 knockdown, and reduces intracellular glycans, linking YIPF1 to Golgi recovery and normal glycan synthesis [#2, #3]. Beyond these localization and loss-of-function phenotypes, no further molecular mechanism for YIPF1 has been characterized in the available corpus.\",\n  \"teleology\": [\n    {\n      \"year\": 2017,\n      \"claim\": \"Establishing where YIPF1 resides was the first step in assigning it a compartment-specific function; this placed it at the medial-/trans-Golgi and TGN and showed it behaves as a bona fide Golgi-resident under membrane perturbation.\",\n      \"evidence\": \"Immunofluorescence with Golgi/TGN marker co-localization and brefeldin A redistribution dynamics\",\n      \"pmids\": [\"28286305\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Single lab, single cell context for steady-state localization\",\n        \"Does not define the membrane topology or trafficking itinerary of YIPF1\",\n        \"Identity of the post-BFA cytoplasmic puncta unresolved\"\n      ]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Whether YIPF1 acts alone or within a complex was unknown; reciprocal Co-IP and knockdown showed it partners with YIPF6 in a relationship where YIPF6 stabilizes YIPF1, defining a co-dependent complex.\",\n      \"evidence\": \"Co-immunoprecipitation and siRNA knockdown with western blot in cultured cells\",\n      \"pmids\": [\"28286305\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Stoichiometry and direct binding interface not defined\",\n        \"Whether other YIPF family members participate in the complex untested\",\n        \"Mechanism by which YIPF6 confers YIPF1 stability unknown\"\n      ]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"The cellular requirement for YIPF1 was addressed by loss-of-function: its depletion delayed Golgi reassembly after BFA washout, assigning YIPF1 a specific role in Golgi recovery distinct from YIPF6.\",\n      \"evidence\": \"siRNA knockdown followed by brefeldin A washout assay with Golgi marker imaging\",\n      \"pmids\": [\"28286305\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Molecular step in reassembly that requires YIPF1 not identified\",\n        \"Steady-state Golgi structure effects versus reassembly-specific effects not separated\"\n      ]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Connecting YIPF1 to secretory output, its knockdown reduced intracellular glycans, linking the protein to normal glycan synthesis.\",\n      \"evidence\": \"siRNA knockdown with intracellular glycan measurement in HT-29 cells\",\n      \"pmids\": [\"28286305\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"Single lab, single method without detailed molecular mechanism\",\n        \"Whether the glycan defect is a direct consequence or secondary to disrupted Golgi structure is unresolved\",\n        \"Specific glycosyltransferases or substrates affected not identified\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"The biochemical activity of YIPF1 — whether it acts as a cargo receptor, membrane organizer, or regulator of Golgi enzymes — remains undefined.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"No molecular activity assigned to YIPF1\",\n        \"No structural model of the YIPF1-YIPF6 complex\",\n        \"Direct trafficking cargo or enzyme partners unidentified\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [],\n    \"localization\": [\n      {\"term_id\": \"GO:0005794\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-5653656\", \"supporting_discovery_ids\": [2]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"YIPF6\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"faith_supported":4,"faith_total":4,"faith_pct":100.0}}