View source for 4v53


==Crystal structure of the bacterial ribosome from Escherichia coli in complex with gentamicin.==
<StructureSection load='4v53' size='340' side='right'caption='[[4v53]], [[Resolution|resolution]] 3.54&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4v53]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. This structure supersedes the now removed PDB entries [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2qb9 2qb9], [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2qba 2qba], [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2qbb 2qbb] and [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2qbc 2qbc]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4V53 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4V53 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]] 3.54&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=LLL:(2R,3R,4R,5R)-2-((1S,2S,3R,4S,6R)-4,6-DIAMINO-3-((2R,3R,6S)-3-AMINO-6-(AMINOMETHYL)-TETRAHYDRO-2H-PYRAN-2-YLOXY)-2-HYDROXYCYCLOHEXYLOXY)-5-METHYL-4-(METHYLAMINO)-TETRAHYDRO-2H-PYRAN-3,5-DIOL'>LLL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=4v53 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4v53 OCA], [https://pdbe.org/4v53 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4v53 RCSB], [https://www.ebi.ac.uk/pdbsum/4v53 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4v53 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RS3_ECOLI RS3_ECOLI] Binds the lower part of the 30S subunit head. Binds mRNA in the 70S ribosome, positioning it for translation (By similarity).<ref>PMID:15652481</ref>   Plays a role in mRNA unwinding by the ribosome, possibly by forming part of a processivity clamp.<ref>PMID:15652481</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Aminoglycosides are widely used antibiotics that cause messenger RNA decoding errors, block mRNA and transfer RNA translocation, and inhibit ribosome recycling. Ribosome recycling follows the termination of protein synthesis and is aided by ribosome recycling factor (RRF) in bacteria. The molecular mechanism by which aminoglycosides inhibit ribosome recycling is unknown. Here we show in X-ray crystal structures of the Escherichia coli 70S ribosome that RRF binding causes RNA helix H69 of the large ribosomal subunit, which is crucial for subunit association, to swing away from the subunit interface. Aminoglycosides bind to H69 and completely restore the contacts between ribosomal subunits that are disrupted by RRF. These results provide a structural explanation for aminoglycoside inhibition of ribosome recycling.

Structural basis for aminoglycoside inhibition of bacterial ribosome recycling.,Borovinskaya MA, Pai RD, Zhang W, Schuwirth BS, Holton JM, Hirokawa G, Kaji H, Kaji A, Cate JH Nat Struct Mol Biol. 2007 Aug;14(8):727-32. Epub 2007 Jul 29. PMID:17660832<ref>PMID:17660832</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4v53" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribosomal protein THX 3D structures|Ribosomal protein THX 3D structures]]
*[[Ribosome 3D structures|Ribosome 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Borovinskaya MA]]
[[Category: Cate JHD]]
[[Category: Hirokawa G]]
[[Category: Holton JM]]
[[Category: Kaji A]]
[[Category: Kaji H]]
[[Category: Pai RD]]
[[Category: Schuwirth B-S]]
[[Category: Zhang W]]