{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T18:04:45Z","timestamp":1787162685932,"version":"build-2736575974"},"reference-count":66,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2019,12,4]],"date-time":"2019-12-04T00:00:00Z","timestamp":1575417600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program","doi-asserted-by":"publisher","award":["2017YFA0504300"],"award-info":[{"award-number":["2017YFA0504300"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program","doi-asserted-by":"publisher","award":["2017YFA0505900"],"award-info":[{"award-number":["2017YFA0505900"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["31570720"],"award-info":[{"award-number":["31570720"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81441109"],"award-info":[{"award-number":["81441109"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,1,24]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The assembly of snRNP cores, in which seven Sm proteins, D1\/D2\/F\/E\/G\/D3\/B, form a ring around the nonameric Sm site of snRNAs, is the early step of spliceosome formation and essential to eukaryotes. It is mediated by the PMRT5 and SMN complexes sequentially in vivo. SMN deficiency causes neurodegenerative disease spinal muscular atrophy (SMA). How the SMN complex assembles snRNP cores is largely unknown, especially how the SMN complex achieves high RNA assembly specificity and how it is released. Here we show, using crystallographic and biochemical approaches, that Gemin2 of the SMN complex enhances RNA specificity of SmD1\/D2\/F\/E\/G via a negative cooperativity between Gemin2 and RNA in binding SmD1\/D2\/F\/E\/G. Gemin2, independent of its N-tail, constrains the horseshoe-shaped SmD1\/D2\/F\/E\/G from outside in a physiologically relevant, narrow state, enabling high RNA specificity. Moreover, the assembly of RNAs inside widens SmD1\/D2\/F\/E\/G, causes the release of Gemin2\/SMN allosterically and allows SmD3\/B to join. The assembly of SmD3\/B further facilitates the release of Gemin2\/SMN. This is the first to show negative cooperativity in snRNP assembly, which provides insights into RNA selection and the SMN complex's release. These findings reveal a basic mechanism of snRNP core assembly and facilitate pathogenesis studies of SMA.<\/jats:p>","DOI":"10.1093\/nar\/gkz1135","type":"journal-article","created":{"date-parts":[[2019,11,21]],"date-time":"2019-11-21T07:11:22Z","timestamp":1574320282000},"page":"895-911","source":"Crossref","is-referenced-by-count":20,"title":["Negative cooperativity between Gemin2 and RNA provides insights into RNA selection and the SMN complex's release in snRNP assembly"],"prefix":"10.1093","volume":"48","author":[{"given":"Hongfei","family":"Yi","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Mu","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Congcong","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xi","family":"Kong","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yingzhi","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Hou","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1719-1961","authenticated-orcid":false,"given":"Rundong","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2019,12,4]]},"reference":[{"key":"2020011102331208100_B1","doi-asserted-by":"crossref","first-page":"a003707","DOI":"10.1101\/cshperspect.a003707","article-title":"Spliceosome structure and function","volume":"3","author":"Will","year":"2011","journal-title":"Cold Spring Harb. Perspect. 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