8y7e: Difference between revisions
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New page: '''Unreleased structure''' The entry 8y7e is ON HOLD Authors: Description: Category: Unreleased Structures |
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The | ==Cryo-EM Structure of the human minor pre-B complex (pre-precatalytic spliceosome) U12 snRNP part== | ||
<StructureSection load='8y7e' size='340' side='right'caption='[[8y7e]], [[Resolution|resolution]] 4.66Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8y7e]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8Y7E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8Y7E FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 4.66Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8y7e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8y7e OCA], [https://pdbe.org/8y7e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8y7e RCSB], [https://www.ebi.ac.uk/pdbsum/8y7e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8y7e ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/SF3B1_HUMAN SF3B1_HUMAN] Subunit of the splicing factor SF3B required for 'A' complex assembly formed by the stable binding of U2 snRNP to the branchpoint sequence (BPS) in pre-mRNA. Sequence independent binding of SF3A/SF3B complex upstream of the branch site is essential, it may anchor U2 snRNP to the pre-mRNA. May also be involved in the assembly of the 'E' complex. Belongs also to the minor U12-dependent spliceosome, which is involved in the splicing of rare class of nuclear pre-mRNA intron. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The minor spliceosome, which is responsible for the splicing of U12-type introns, comprises five small nuclear RNAs (snRNAs), of which only one is shared with the major spliceosome. In this work, we report the 3.3-angstrom cryo-electron microscopy structure of the fully assembled human minor spliceosome pre-B complex. The atomic model includes U11 small nuclear ribonucleoprotein (snRNP), U12 snRNP, and U4atac/U6atac.U5 tri-snRNP. U11 snRNA is recognized by five U11-specific proteins (20K, 25K, 35K, 48K, and 59K) and the heptameric Sm ring. The 3' half of the 5'-splice site forms a duplex with U11 snRNA; the 5' half is recognized by U11-35K, U11-48K, and U11 snRNA. Two proteins, CENATAC and DIM2/TXNL4B, specifically associate with the minor tri-snRNP. A structural analysis uncovered how two conformationally similar tri-snRNPs are differentiated by the minor and major prespliceosomes for assembly. | |||
Structural basis of U12-type intron engagement by the fully assembled human minor spliceosome.,Bai R, Yuan M, Zhang P, Luo T, Shi Y, Wan R Science. 2024 Mar 15;383(6688):1245-1252. doi: 10.1126/science.adn7272. Epub 2024 , Mar 14. PMID:38484052<ref>PMID:38484052</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 8y7e" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Bai R]] | |||
[[Category: Luo T]] | |||
[[Category: Shi Y]] | |||
[[Category: Wan R]] | |||
[[Category: Yuan M]] | |||
[[Category: Zhang P]] | |||
Latest revision as of 12:42, 23 October 2024
Cryo-EM Structure of the human minor pre-B complex (pre-precatalytic spliceosome) U12 snRNP part
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