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2dxi
From Proteopedia
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| - | [[Image:2dxi.gif|left|200px]] | ||
| - | + | ==2.2 A crystal structure of glutamyl-tRNA synthetase from Thermus thermophilus complexed with tRNA(Glu), ATP, and L-glutamol== | |
| - | + | <StructureSection load='2dxi' size='340' side='right'caption='[[2dxi]], [[Resolution|resolution]] 2.20Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[2dxi]] is a 4 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=2DXI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DXI 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]] 2.2Å</td></tr> | |
| - | | | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=GAU:(4S)-4-AMINO-5-HYDROXYPENTANOIC+ACID'>GAU</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=2dxi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dxi OCA], [https://pdbe.org/2dxi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2dxi RCSB], [https://www.ebi.ac.uk/pdbsum/2dxi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2dxi ProSAT], [https://www.topsan.org/Proteins/RSGI/2dxi TOPSAN]</span></td></tr> | |
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/SYE_THET8 SYE_THET8] Catalyzes the attachment of glutamate to tRNA(Glu) in a two-step reaction: glutamate is first activated by ATP to form Glu-AMP and then transferred to the acceptor end of tRNA(Glu).<ref>PMID:11224561</ref> <ref>PMID:17161369</ref> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dx/2dxi_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=2dxi ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Glutamyl-tRNA synthetase (GluRS) is one of the aminoacyl-tRNA synthetases that require the cognate tRNA for specific amino acid recognition and activation. We analyzed the role of tRNA in amino acid recognition by crystallography. In the GluRS*tRNA(Glu)*Glu structure, GluRS and tRNA(Glu) collaborate to form a highly complementary L-glutamate-binding site. This collaborative site is functional, as it is formed in the same manner in pretransition-state mimic, GluRS*tRNA(Glu)*ATP*Eol (a glutamate analog), and posttransition-state mimic, GluRS*tRNA(Glu)*ESA (a glutamyl-adenylate analog) structures. In contrast, in the GluRS*Glu structure, only GluRS forms the amino acid-binding site, which is defective and accounts for the binding of incorrect amino acids, such as D-glutamate and L-glutamine. Therefore, tRNA(Glu) is essential for formation of the completely functional binding site for L-glutamate. These structures, together with our previously described structures, reveal that tRNA plays a crucial role in accurate positioning of both L-glutamate and ATP, thus driving the amino acid activation. | ||
| - | + | Structural bases of transfer RNA-dependent amino acid recognition and activation by glutamyl-tRNA synthetase.,Sekine S, Shichiri M, Bernier S, Chenevert R, Lapointe J, Yokoyama S Structure. 2006 Dec;14(12):1791-9. PMID:17161369<ref>PMID:17161369</ref> | |
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 2dxi" style="background-color:#fffaf0;"></div> | ||
| - | == | + | ==See Also== |
| - | + | *[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]] | |
| - | + | *[[Transfer RNA (tRNA)|Transfer RNA (tRNA)]] | |
| - | == | + | == References == |
| - | + | <references/> | |
| - | + | __TOC__ | |
| - | + | </StructureSection> | |
| - | + | [[Category: Large Structures]] | |
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| - | [[Category: | + | |
[[Category: Thermus thermophilus]] | [[Category: Thermus thermophilus]] | ||
| - | + | [[Category: Sekine S]] | |
| - | [[Category: Sekine | + | [[Category: Yokoyama S]] |
| - | [[Category: Yokoyama | + | |
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Current revision
2.2 A crystal structure of glutamyl-tRNA synthetase from Thermus thermophilus complexed with tRNA(Glu), ATP, and L-glutamol
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