2dqn

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[[Image:2dqn.png|left|200px]]
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==Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Asn==
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<StructureSection load='2dqn' size='340' side='right' caption='[[2dqn]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2dqn]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DQN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2DQN FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ASN:ASPARAGINE'>ASN</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2f2a|2f2a]], [[2df4|2df4]], [[2g5h|2g5h]], [[2g5i|2g5i]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">gatA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]), gatB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]), gatC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus])</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2dqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dqn OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2dqn RCSB], [http://www.ebi.ac.uk/pdbsum/2dqn PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dq/2dqn_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The formation of glutaminyl transfer RNA (Gln-tRNA(Gln)) differs among the three domains of life. Most bacteria employ an indirect pathway to produce Gln-tRNA(Gln) by a heterotrimeric glutamine amidotransferase CAB (GatCAB) that acts on the misacylated Glu-tRNA(Gln). Here, we describe a series of crystal structures of intact GatCAB from Staphylococcus aureus in the apo form and in the complexes with glutamine, asparagine, Mn2+, and adenosine triphosphate analog. Two identified catalytic centers for the glutaminase and transamidase reactions are markedly distant but connected by a hydrophilic ammonia channel 30 A in length. Further, we show that the first U-A base pair in the acceptor stem and the D loop of tRNA(Gln) serve as identity elements essential for discrimination by GatCAB and propose a complete model for the overall concerted reactions to synthesize Gln-tRNA(Gln).
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{{STRUCTURE_2dqn| PDB=2dqn | SCENE= }}
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Ammonia channel couples glutaminase with transamidase reactions in GatCAB.,Nakamura A, Yao M, Chimnaronk S, Sakai N, Tanaka I Science. 2006 Jun 30;312(5782):1954-8. PMID:16809541<ref>PMID:16809541</ref>
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===Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Asn===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_16809541}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[2dqn]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DQN OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:016809541</ref><references group="xtra"/>
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[[Category: Staphylococcus aureus]]
[[Category: Staphylococcus aureus]]
[[Category: Nakamura, A.]]
[[Category: Nakamura, A.]]

Revision as of 23:48, 29 September 2014

Structure of tRNA-Dependent Amidotransferase GatCAB complexed with Asn

2dqn, resolution 2.55Å

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