View source for 7naf


==State E2 nucleolar 60S ribosomal biogenesis intermediate - Spb1-MTD local model==
<StructureSection load='7naf' size='340' side='right'caption='[[7naf]], [[Resolution|resolution]] 3.13&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7naf]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_BY4741 Saccharomyces cerevisiae BY4741]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7NAF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7NAF 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]] 3.13&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A2M:2-O-METHYLADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>A2M</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</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=7naf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7naf OCA], [https://pdbe.org/7naf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7naf RCSB], [https://www.ebi.ac.uk/pdbsum/7naf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7naf ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RRP17_YEAST RRP17_YEAST] Essential protein involved in ribosomal RNA processing.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
DEAD-box ATPases are ubiquitous enzymes essential in all aspects of RNA biology. However, the limited in vitro catalytic activities described for these enzymes are at odds with their complex cellular roles, most notably in driving large-scale RNA remodeling steps during the assembly of ribonucleoproteins (RNPs). We describe cryo-EM structures of 60S ribosomal biogenesis intermediates that reveal how context-specific RNA unwinding by the DEAD-box ATPase Spb4 results in extensive, sequence-specific remodeling of rRNA secondary structure. Multiple cis and trans interactions stabilize Spb4 in a post-catalytic, high-energy intermediate that drives the organization of the three-way junction at the base of rRNA domain IV. This mechanism explains how limited strand separation by DEAD-box ATPases is leveraged to provide non-equilibrium directionality and ensure efficient and accurate RNP assembly.

Sequence-specific remodeling of a topologically complex RNP substrate by Spb4.,Cruz VE, Sekulski K, Peddada N, Sailer C, Balasubramanian S, Weirich CS, Stengel F, Erzberger JP Nat Struct Mol Biol. 2022 Dec;29(12):1228-1238. doi: 10.1038/s41594-022-00874-9. , Epub 2022 Dec 8. PMID:36482249<ref>PMID:36482249</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7naf" style="background-color:#fffaf0;"></div>

==See Also==
*[[GTP-binding protein 3D structures|GTP-binding protein 3D structures]]
*[[Ribosome biogenesis protein 3D structures|Ribosome biogenesis protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae BY4741]]
[[Category: Cruz VE]]
[[Category: Erzberger JP]]
[[Category: Peddada N]]
[[Category: Sekulski K]]