View source for 5fci


==Structure of the vacant uL3 W255C mutant 80S yeast ribosome==
<StructureSection load='5fci' size='340' side='right'caption='[[5fci]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5fci]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5FCI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5FCI FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.4&#8491;</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=OHX:OSMIUM+(III)+HEXAMMINE'>OHX</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=5fci FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5fci OCA], [https://pdbe.org/5fci PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5fci RCSB], [https://www.ebi.ac.uk/pdbsum/5fci PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5fci ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RS3A1_YEAST RS3A1_YEAST] 
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== Publication Abstract from PubMed ==
The ribosome has been described as a ribozyme in which ribosomal RNA is responsible for peptidyl-transferase reaction catalysis. The W255C mutation of the universally conserved ribosomal protein uL3 has diverse effects on ribosome function (e.g., increased affinities for transfer RNAs, decreased rates of peptidyl-transfer), and cells harboring this mutation are resistant to peptidyl-transferase inhibitors (e.g., anisomycin). These observations beg the question of how a single amino acid mutation may have such wide ranging consequences. Here, we report the structure of the vacant yeast uL3 W255C mutant ribosome by X-ray crystallography, showing a disruption of the A-site side of the peptidyl-transferase center (PTC). An additional X-ray crystallographic structure of the anisomycin-containing mutant ribosome shows that high concentrations of this inhibitor restore a "WT-like" configuration to this region of the PTC, providing insight into the resistance mechanism of the mutant. Globally, our data demonstrate that ribosomal protein uL3 is structurally essential to ensure an optimal and catalytically efficient organization of the PTC, highlighting the importance of proteins in the RNA-centered ribosome.

Crystal Structures of the uL3 Mutant Ribosome: Illustration of the Importance of Ribosomal Proteins for Translation Efficiency.,Mailliot J, Garreau de Loubresse N, Yusupova G, Meskauskas A, Dinman JD, Yusupov M J Mol Biol. 2016 Feb 18. pii: S0022-2836(16)00129-7. doi:, 10.1016/j.jmb.2016.02.013. PMID:26906928<ref>PMID:26906928</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5fci" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribosome 3D structures|Ribosome 3D structures]]
*[[3D sructureseceptor for activated protein kinase C 1|3D sructureseceptor for activated protein kinase C 1]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae S288C]]
[[Category: Dinman JD]]
[[Category: Garreau de Loubresse N]]
[[Category: Mailliot J]]
[[Category: Yusupov M]]
[[Category: Yusupova G]]