{"doi":"10.1101/727107","title":"Uncoating of COPII from ER exit site membranes precedes cargo accumulation and membrane fission","abstract":"<jats:title>Summary</jats:title>\n                <jats:p>\n                  COPII and COPI are considered to be analogous sets of vesicle coat protein heterocomplexes. Coupled to cargo selection, they mediate the formation of membrane vesicles translocating in opposite directions to differ rent destinations within the secretory pathway. Here, live cell and electron microscopy provided evidence for a different localization and mode of function of the COPII coat during protein export from the endoplasmic reticulum (ER). Pharmaceutical and genetic perturbations of ER-Golgi transport were used to demonstrate that COPII is recruited to membranes defining the boundary of ER-ER Exit Sites (ERES) where it facilitates selective cargo concentration. Uncoating of COPII membranes precedes cargo accumulation and fission of Golgi-bound carriers. Moreover, we report what may be direct transfer of cargo to the Golgi apparatus from Golgi-associated BFA sensitive ERESs. Finally, in\n                  <jats:italic>ldlF</jats:italic>\n                  cells the stably expressed functional ε-COPI-EYFP labeled both ERESs and anterograde carriers. These findings change our understanding of the role of coat proteins in ER to Golgi transport.\n                </jats:p>","journal":"bioRxiv (Cold Spring Harbor Laboratory)","year":null,"id":45168,"datarank":0.41834168856287735,"base_score":1.791759469228055,"endowment":1.791759469228055,"self_citation_contribution":0.26876392038420827,"citation_network_contribution":0.14957776817866908,"self_endowment_contribution":0.26876392038420827,"citer_contribution":0.14957776817866908,"corpus_percentile":null,"corpus_rank":null,"citation_count":5,"citer_count":4,"citers_with_citation_signal":4,"citers_with_endowment":4,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":211414,"name":"Inbar Nevo-Yassaf","orcid":null,"position":1,"is_corresponding":false},{"id":211415,"name":"Tamar Aviad","orcid":null,"position":2,"is_corresponding":false},{"id":211416,"name":"Yakey Yaffe","orcid":null,"position":3,"is_corresponding":false},{"id":211417,"name":"Eitan Erez Zahavi","orcid":null,"position":4,"is_corresponding":false},{"id":211418,"name":"Anna Dukhovny","orcid":null,"position":5,"is_corresponding":false},{"id":211419,"name":"Eran Perlson","orcid":null,"position":6,"is_corresponding":false},{"id":211420,"name":"Ilya Brodsky","orcid":null,"position":7,"is_corresponding":false},{"id":211421,"name":"Adva Yeheskel","orcid":null,"position":8,"is_corresponding":false},{"id":211422,"name":"Metsada Pasmanik-Chor","orcid":null,"position":9,"is_corresponding":false},{"id":211423,"name":"Anna Mironov","orcid":null,"position":10,"is_corresponding":false},{"id":168533,"name":"Galina V. Beznoussenko","orcid":null,"position":11,"is_corresponding":false},{"id":168528,"name":"Alexander A. Mironov","orcid":null,"position":12,"is_corresponding":false},{"id":211424,"name":"Ella H. Sklan","orcid":null,"position":13,"is_corresponding":false},{"id":62797,"name":"George H. Patterson","orcid":"0000-0001-8478-9253","position":14,"is_corresponding":false},{"id":211425,"name":"Yoji Yonemura","orcid":null,"position":15,"is_corresponding":false},{"id":211426,"name":"Christoph Kaether","orcid":null,"position":16,"is_corresponding":false},{"id":211427,"name":"Koret Hirschberg","orcid":null,"position":17,"is_corresponding":false},{"id":211413,"name":"Olga Shomron","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":1.791759469228055,"endowment":1.791759469228055,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"21071399","pmcid":null,"openalex_id":"https://openalex.org/W2964657771","authors":[],"funders":[],"total_grants":0,"fwci":null,"citation_percentile":null,"influential_citations":1,"citation_trend":[{"year":2020,"count":2},{"year":2021,"count":3}],"oa_status":"green","license":"cc-by-nc-nd","oa_locations":[{"url":"https://www.biorxiv.org/content/biorxiv/early/2019/08/06/727107.full.pdf","host_type":"repository"},{"url":"https://doi.org/10.1083/jcb.201907224","host_type":"GREEN"},{"url":"https://www.biorxiv.org/content/biorxiv/early/2019/08/06/727107.full.pdf","host_type":"repository"},{"url":"https://syndication.highwire.org/content/doi/10.1101/727107","host_type":"publisher"},{"url":"https://doi.org/10.1101/727107","host_type":"repository"}],"fields_of_study":["Cellular transport and secretion","Endoplasmic Reticulum Stress and Disease","Lipid Membrane Structure and Behavior","Biology","Chemistry"],"mesh_terms":[],"keywords":["COPII","COPI","Golgi apparatus","Endoplasmic reticulum","Vesicular Transport Proteins","Cell biology","Vesicle","Secretory pathway","Transport protein","Membrane","Biology","Chemistry","Vacuole","Biochemistry","Cytoplasm"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Life below water"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-02T06:58:43.480944Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}