9y4h: Difference between revisions

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'''Unreleased structure'''


The entry 9y4h is ON HOLD
==Structure of guinea pig ribosome with P/E-tRNA and mRNA==
<StructureSection load='9y4h' size='340' side='right'caption='[[9y4h]], [[Resolution|resolution]] 4.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9y4h]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Cavia_porcellus Cavia porcellus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9Y4H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9Y4H 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]] 4.7&#8491;</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=9y4h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9y4h OCA], [https://pdbe.org/9y4h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9y4h RCSB], [https://www.ebi.ac.uk/pdbsum/9y4h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9y4h 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.


Authors: Gutierrez-Vargas, C., De, S., Maji, S., Liu, Z., Nieb, M., Seluanov, A., Gorbunova, V., Frank, J.
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>


Description: Structure of guinea pig ribosome with P/E-tRNA and mRNA
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[Category: Unreleased Structures]]
</div>
[[Category: Maji, S]]
<div class="pdbe-citations 9y4h" style="background-color:#fffaf0;"></div>
[[Category: De, S]]
== References ==
[[Category: Frank, J]]
<references/>
[[Category: Nieb, M]]
__TOC__
[[Category: Liu, Z]]
</StructureSection>
[[Category: Gorbunova, V]]
[[Category: Cavia porcellus]]
[[Category: Seluanov, A]]
[[Category: Large Structures]]
[[Category: Gutierrez-Vargas, C]]
[[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]]
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