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The | ==Structure of the rabbit 80S ribosome stalled on globin mRNA at the stop codon== | ||
<SX load='6hcf' size='340' side='right' viewer='molstar' caption='[[6hcf]], [[Resolution|resolution]] 3.90Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6hcf]] is a 87 chain structure with sequence from [http://en.wikipedia.org/wiki/European_rabbit European rabbit] and [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6HCF OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6HCF FirstGlance]. <br> | |||
</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=SF4:IRON/SULFUR+CLUSTER'>SF4</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'>[http://proteopedia.org/fgij/fg.htm?mol=6hcf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6hcf OCA], [http://pdbe.org/6hcf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6hcf RCSB], [http://www.ebi.ac.uk/pdbsum/6hcf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6hcf ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/U3KPD5_RABIT U3KPD5_RABIT]] Binds to the 23S rRNA.[RuleBase:RU000576] [[http://www.uniprot.org/uniprot/G1SS70_RABIT G1SS70_RABIT]] May play a role during erythropoiesis through regulation of transcription factor DDIT3.[HAMAP-Rule:MF_03122] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Aberrantly slow translation elicits quality control pathways initiated by the ubiquitin ligase ZNF598. How ZNF598 discriminates physiologic from pathologic translation complexes and ubiquitinates stalled ribosomes selectively is unclear. Here, we find that the minimal unit engaged by ZNF598 is the collided di-ribosome, a molecular species that arises when a trailing ribosome encounters a slower leading ribosome. The collided di-ribosome structure reveals an extensive 40S-40S interface in which the ubiquitination targets of ZNF598 reside. The paucity of 60S interactions allows for different ribosome rotation states, explaining why ZNF598 recognition is indifferent to how the leading ribosome has stalled. The use of ribosome collisions as a proxy for stalling allows the degree of tolerable slowdown to be tuned by the initiation rate on that mRNA; hence, the threshold for triggering quality control is substrate specific. These findings illustrate how higher-order ribosome architecture can be exploited by cellular factors to monitor translation status. | |||
ZNF598 Is a Quality Control Sensor of Collided Ribosomes.,Juszkiewicz S, Chandrasekaran V, Lin Z, Kraatz S, Ramakrishnan V, Hegde RS Mol Cell. 2018 Oct 1. pii: S1097-2765(18)30697-X. doi:, 10.1016/j.molcel.2018.08.037. PMID:30293783<ref>PMID:30293783</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 6hcf" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ribosome 3D structures|Ribosome 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</SX> | |||
[[Category: European rabbit]] | |||
[[Category: Large Structures]] | |||
[[Category: Oryctolagus cuniculus]] | |||
[[Category: Chandrasekaran, V]] | |||
[[Category: Hegde, R S]] | |||
[[Category: Juszkiewicz, S]] | [[Category: Juszkiewicz, S]] | ||
[[Category: Kraatz, S]] | |||
[[Category: Lin, Z]] | [[Category: Lin, Z]] | ||
[[Category: Ramakrishnan, V]] | [[Category: Ramakrishnan, V]] | ||
[[Category: Quality control]] | |||
[[Category: Ribosome]] | |||
[[Category: Translation]] | |||
Latest revision as of 04:19, 11 April 2020
Structure of the rabbit 80S ribosome stalled on globin mRNA at the stop codonStructure of the rabbit 80S ribosome stalled on globin mRNA at the stop codon
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