1h3n

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[[Image:1h3n.gif|left|200px]]<br />
 
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<applet load="1h3n" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1h3n, resolution 2.00&Aring;" />
 
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'''LEUCYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH A SULPHAMOYL ANALOGUE OF LEUCYL-ADENYLATE'''<br />
 
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==Overview==
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==Leucyl-tRNA synthetase from Thermus thermophilus complexed with a sulphamoyl analogue of leucyl-adenylate==
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Leucyl-, isoleucyl- and valyl-tRNA synthetases are closely related large, monomeric class I synthetases. Each contains a homologous insertion domain, of approximately 200 residues, which is thought to permit them to, hydrolyse ('edit') cognate tRNA that has been mischarged with a chemically, similar but non-cognate amino acid. We describe the first crystal, structure of a leucyl-tRNA synthetase, from the hyperthermophile Thermus, thermophilus, at 2.0 A resolution. The overall architecture is similar to, that of isoleucyl-tRNA synthetase, except that the putative editing domain, is inserted at a different position in the primary structure. This feature, is unique to prokaryote-like leucyl-tRNA synthetases, as is the presence, of a novel additional flexibly inserted domain. Comparison of ... [[http://ispc.weizmann.ac.il/pmbin/getpm?10811626 (full description)]]
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<StructureSection load='1h3n' size='340' side='right'caption='[[1h3n]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1h3n]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H3N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1H3N FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=LEU:LEUCINE'>LEU</scene>, <scene name='pdbligand=LMS:[(2R,3S,4R,5R)-5-(6-AMINO-9H-PURIN-9-YL)-3,4-DIHYDROXYTETRAHYDRO-2-FURANYL]METHYL+SULFAMATE'>LMS</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1h3n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h3n OCA], [https://pdbe.org/1h3n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1h3n RCSB], [https://www.ebi.ac.uk/pdbsum/1h3n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1h3n ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/Q7SIE4_THETH Q7SIE4_THETH]
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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/h3/1h3n_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/main_output.php?pdb_ID=1h3n 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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Leucyl-, isoleucyl- and valyl-tRNA synthetases are closely related large monomeric class I synthetases. Each contains a homologous insertion domain of approximately 200 residues, which is thought to permit them to hydrolyse ('edit') cognate tRNA that has been mischarged with a chemically similar but non-cognate amino acid. We describe the first crystal structure of a leucyl-tRNA synthetase, from the hyperthermophile Thermus thermophilus, at 2.0 A resolution. The overall architecture is similar to that of isoleucyl-tRNA synthetase, except that the putative editing domain is inserted at a different position in the primary structure. This feature is unique to prokaryote-like leucyl-tRNA synthetases, as is the presence of a novel additional flexibly inserted domain. Comparison of native enzyme and complexes with leucine and a leucyl- adenylate analogue shows that binding of the adenosine moiety of leucyl-adenylate causes significant conformational changes in the active site required for amino acid activation and tight binding of the adenylate. These changes are propagated to more distant regions of the enzyme, leading to a significantly more ordered structure ready for the subsequent aminoacylation and/or editing steps.
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==About this Structure==
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The 2 A crystal structure of leucyl-tRNA synthetase and its complex with a leucyl-adenylate analogue.,Cusack S, Yaremchuk A, Tukalo M EMBO J. 2000 May 15;19(10):2351-61. PMID:10811626<ref>PMID:10811626</ref>
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1H3N is a [[http://en.wikipedia.org/wiki/Single_protein Single protein]] structure of sequence from [[http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]] with ZN, SO4 and LEU as [[http://en.wikipedia.org/wiki/ligands ligands]]. Structure known Active Site: AC1. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1H3N OCA]].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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The 2 A crystal structure of leucyl-tRNA synthetase and its complex with a leucyl-adenylate analogue., Cusack S, Yaremchuk A, Tukalo M, EMBO J. 2000 May 15;19(10):2351-61. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10811626 10811626]
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</div>
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[[Category: Single protein]]
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<div class="pdbe-citations 1h3n" style="background-color:#fffaf0;"></div>
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[[Category: Thermus thermophilus]]
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[[Category: Cusack, S.]]
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[[Category: Tukalo, M.]]
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[[Category: Yaremchuk, A.]]
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[[Category: LEU]]
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[[Category: SO4]]
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[[Category: ZN]]
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[[Category: atp + l-leucine + trna (leu) -> amp + ppi + l-leucyl-trna(leu)]]
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[[Category: class i aminoacyl-trna synthetase]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Oct 30 12:30:06 2007''
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==See Also==
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*[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Thermus thermophilus]]
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[[Category: Cusack S]]
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[[Category: Tukalo M]]
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[[Category: Yaremchuk A]]

Current revision

Leucyl-tRNA synthetase from Thermus thermophilus complexed with a sulphamoyl analogue of leucyl-adenylate

PDB ID 1h3n

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