7oi7: Difference between revisions
New page: '''Unreleased structure''' The entry 7oi7 is ON HOLD Authors: Description: Category: Unreleased Structures |
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==Cryo-EM structure of late human 39S mitoribosome assembly intermediates, state 2== | |||
<StructureSection load='7oi7' size='340' side='right'caption='[[7oi7]], [[Resolution|resolution]] 3.50Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7oi7]] 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=7OI7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7OI7 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]] 3.5Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PNS:4-PHOSPHOPANTETHEINE'>PNS</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=7oi7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7oi7 OCA], [https://pdbe.org/7oi7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7oi7 RCSB], [https://www.ebi.ac.uk/pdbsum/7oi7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7oi7 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/RM02_HUMAN RM02_HUMAN] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Assembly of the mitoribosome is largely enigmatic and involves numerous assembly factors. Little is known about their function and the architectural transitions of the pre-ribosomal intermediates. Here, we solve cryo-EM structures of the human 39S large subunit pre-ribosomes, representing five distinct late states. Besides the MALSU1 complex used as bait for affinity purification, we identify several assembly factors, including the DDX28 helicase, MRM3, GTPBP10 and the NSUN4-mTERF4 complex, all of which keep the 16S rRNA in immature conformations. The late transitions mainly involve rRNA domains IV and V, which form the central protuberance, the intersubunit side and the peptidyltransferase center of the 39S subunit. Unexpectedly, we find deacylated tRNA in the ribosomal E-site, suggesting a role in 39S assembly. Taken together, our study provides an architectural inventory of the distinct late assembly phase of the human 39S mitoribosome. | |||
A distinct assembly pathway of the human 39S late pre-mitoribosome.,Cheng J, Berninghausen O, Beckmann R Nat Commun. 2021 Jul 27;12(1):4544. doi: 10.1038/s41467-021-24818-x. PMID:34315873<ref>PMID:34315873</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 7oi7" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ribosome 3D structures|Ribosome 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Beckmann R]] | |||
[[Category: Berninghausen O]] | |||
[[Category: Cheng J]] | |||
Latest revision as of 12:01, 14 July 2024
Cryo-EM structure of late human 39S mitoribosome assembly intermediates, state 2Cryo-EM structure of late human 39S mitoribosome assembly intermediates, state 2
Structural highlights
FunctionPublication Abstract from PubMedAssembly of the mitoribosome is largely enigmatic and involves numerous assembly factors. Little is known about their function and the architectural transitions of the pre-ribosomal intermediates. Here, we solve cryo-EM structures of the human 39S large subunit pre-ribosomes, representing five distinct late states. Besides the MALSU1 complex used as bait for affinity purification, we identify several assembly factors, including the DDX28 helicase, MRM3, GTPBP10 and the NSUN4-mTERF4 complex, all of which keep the 16S rRNA in immature conformations. The late transitions mainly involve rRNA domains IV and V, which form the central protuberance, the intersubunit side and the peptidyltransferase center of the 39S subunit. Unexpectedly, we find deacylated tRNA in the ribosomal E-site, suggesting a role in 39S assembly. Taken together, our study provides an architectural inventory of the distinct late assembly phase of the human 39S mitoribosome. A distinct assembly pathway of the human 39S late pre-mitoribosome.,Cheng J, Berninghausen O, Beckmann R Nat Commun. 2021 Jul 27;12(1):4544. doi: 10.1038/s41467-021-24818-x. PMID:34315873[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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