View source for 2gv3


==Translocation of a tRNA with an extended anticodon through the ribosome==
<StructureSection load='2gv3' size='340' side='right'caption='[[2gv3]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2gv3]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GV3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GV3 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=2gv3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gv3 OCA], [https://pdbe.org/2gv3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gv3 RCSB], [https://www.ebi.ac.uk/pdbsum/2gv3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gv3 ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Coordinated translocation of the tRNA-mRNA complex by the ribosome occurs in a precise, stepwise movement corresponding to a distance of three nucleotides along the mRNA. Frameshift suppressor tRNAs generally contain an extra nucleotide in the anticodon loop and they subvert the normal mechanisms used by the ribosome for frame maintenance. The mechanism by which suppressor tRNAs traverse the ribosome during translocation is poorly understood. Here, we demonstrate translocation of a tRNA by four nucleotides from the A site to the P site, and from the P site to the E site. We show that translocation of a punctuated mRNA is possible with an extra, unpaired nucleotide between codons. Interestingly, the NMR structure of the four nucleotide anticodon stem-loop reveals a conformation different from the canonical tRNA structure. Flexibility within the loop may allow conformational adjustment upon A site binding and for interacting with the four nucleotide codon in order to shift the mRNA reading frame.

Translocation of a tRNA with an extended anticodon through the ribosome.,Phelps SS, Gaudin C, Yoshizawa S, Benitez C, Fourmy D, Joseph S J Mol Biol. 2006 Jul 14;360(3):610-22. Epub 2006 May 22. PMID:16787653<ref>PMID:16787653</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2gv3" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Benitez C]]
[[Category: Fourmy D]]
[[Category: Gaudin C]]
[[Category: Joseph S]]
[[Category: Phelps SS]]
[[Category: Yoshizawa S]]