5lyb: Difference between revisions
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==Crystal structure of the S.cerevisiae 80S ribosome in complex with the A-site bound aminoacyl-tRNA analog ACCPmn== | |||
<StructureSection load='5lyb' size='340' side='right'caption='[[5lyb]], [[Resolution|resolution]] 3.25Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5lyb]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5LYB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5LYB 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]] 3.25Å</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=PPU:PUROMYCIN-5-MONOPHOSPHATE'>PPU</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=5lyb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lyb OCA], [https://pdbe.org/5lyb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5lyb RCSB], [https://www.ebi.ac.uk/pdbsum/5lyb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5lyb ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/RSSA1_YEAS1 RSSA1_YEAS1] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Proline is an amino acid with a unique cyclic structure that facilitates the folding of many proteins, but also impedes the rate of peptide bond formation by the ribosome. As a ribosome substrate, proline reacts markedly slower when compared with other amino acids both as a donor and as an acceptor of the nascent peptide. Furthermore, synthesis of peptides with consecutive proline residues triggers ribosome stalling. Here, we report crystal structures of the eukaryotic ribosome bound to analogs of mono- and diprolyl-tRNAs. These structures provide a high-resolution insight into unique properties of proline as a ribosome substrate. They show that the cyclic structure of proline residue prevents proline positioning in the amino acid binding pocket and affects the nascent peptide chain position in the ribosomal peptide exit tunnel. These observations extend current knowledge of the protein synthesis mechanism. They also revise an old dogma that amino acids bind the ribosomal active site in a uniform way by showing that proline has a binding mode distinct from other amino acids. | |||
Molecular insights into protein synthesis with proline residues.,Melnikov S, Mailliot J, Rigger L, Neuner S, Shin BS, Yusupova G, Dever TE, Micura R, Yusupov M EMBO Rep. 2016 Dec;17(12):1776-1784. Epub 2016 Nov 8. PMID:27827794<ref>PMID:27827794</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 5lyb" style="background-color:#fffaf0;"></div> | ||
[[Category: Mailliot | |||
==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]] | |||
[[Category: Mailliot J]] | |||
[[Category: Melnikov S]] | |||