9y4g: Difference between revisions
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==Structure of tuco-tuco ribosome (rotated, tRNAs, and mRNA)== | |||
<StructureSection load='9y4g' size='340' side='right'caption='[[9y4g]], [[Resolution|resolution]] 3.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[9y4g]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Ctenomyidae Ctenomyidae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9Y4G OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9Y4G 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]] 3.3Å</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=YYG:4-(3-[5-O-PHOSPHONORIBOFURANOSYL]-4,6-DIMETHYL-8-OXO-4,8-DIHYDRO-3H-1,3,4,5,7A-PENTAAZA-S-INDACEN-YLAMINO-BUTYRIC+ACID+METHYL+ESTER'>YYG</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=9y4g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9y4g OCA], [https://pdbe.org/9y4g PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9y4g RCSB], [https://www.ebi.ac.uk/pdbsum/9y4g PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9y4g ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Ribosomes are central to protein synthesis in all organisms. In mammals, the ribosome functional core is highly conserved. Remarkably, two rodent species, the naked mole-rat (NMR) and tuco-tuco, display fragmented 28S ribosomal RNA (rRNA), coupled with high translational fidelity and long lifespan. The unusual ribosomal architecture in the NMR and tuco-tuco has been speculated to be linked to high translational fidelity. Here, we show, by single-particle cryo-electron microscopy, that despite the fragmentation of their rRNA, NMR and tuco-tuco ribosomes retain their core functional architecture. Compared to ribosomes of the guinea pig, a phylogenetically related rodent without 28S rRNA fragmentation, ribosomes of NMR and tuco-tuco exhibit poorly resolved density for certain expansion segments. In contrast, the structure of the guinea pig ribosome shows high similarity to the human ribosome. Enhanced translational fidelity in the NMR and tuco-tuco may stem from subtle, allosteric effects in dynamics, linked to rRNA fragmentation. | |||
Structures of naked mole-rat, tuco-tuco, and guinea pig ribosomes-is rRNA fragmentation linked to translational fidelity?,Gutierrez-Vargas C, De S, Maji S, Liu Z, Ke Z, Niess M, Seluanov A, Gorbunova V, Frank J Nucleic Acids Res. 2026 Jan 22;54(3):gkag006. doi: 10.1093/nar/gkag006. PMID:41603730<ref>PMID:41603730</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 9y4g" style="background-color:#fffaf0;"></div> | ||
[[Category: | == References == | ||
[[Category: Gorbunova | <references/> | ||
[[Category: | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: | [[Category: Ctenomyidae]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: De S]] | ||
[[Category: Frank J]] | |||
[[Category: Gorbunova V]] | |||
[[Category: Gutierrez-Vargas C]] | |||
[[Category: Liu Z]] | |||
[[Category: Maji S]] | |||
[[Category: Nieb M]] | |||
[[Category: Seluanov A]] | |||
Latest revision as of 07:28, 18 February 2026
Structure of tuco-tuco ribosome (rotated, tRNAs, and mRNA)
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