1o0c: Difference between revisions

← Older edit

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 3: / Line 3: @@
 <StructureSection load='1o0c' size='340' side='right'caption='[[1o0c]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1o0c]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1O0C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1O0C FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1o0c]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1O0C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1O0C FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=GLU:GLUTAMIC+ACID'>GLU</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1o0b|1o0b]], [[1qtq|1qtq]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=GLU:GLUTAMIC+ACID'>GLU</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GLNS ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Glutamine--tRNA_ligase Glutamine--tRNA ligase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.18 6.1.1.18] </span></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=1o0c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1o0c OCA], [https://pdbe.org/1o0c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1o0c RCSB], [https://www.ebi.ac.uk/pdbsum/1o0c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1o0c ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/SYQ_ECOLI SYQ_ECOLI]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 20: / Line 20: @@
 </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=1o0c ConSurf].
 <div style="clear:both"></div>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-The 2.5 A crystal structure of Escherichia coli glutaminyl-tRNA synthetase in a quaternary complex with tRNA(Gln), an ATP analog and glutamate reveals that the non-cognate amino acid adopts a distinct binding mode within the active site cleft. In contrast to the binding of cognate glutamine, one oxygen of the charged glutamate carboxylate group makes a direct ion-pair interaction with the strictly conserved Arg30 residue located in the first half of the dinucleotide fold domain. The nucleophilic alpha-carboxylate moiety of glutamate is mispositioned with respect to both the ATP alpha-phosphate and terminal tRNA ribose groups, suggesting that a component of amino acid discrimination resides at the catalytic step of the reaction. Further, the other side-chain carboxylate oxygen of glutamate is found in a position identical to that previously proposed to be occupied by the NH(2) group of the cognate glutamine substrate. At this position, the glutamate oxygen accepts hydrogen bonds from the hydroxyl moiety of Tyr211 and a water molecule. These findings demonstrate that amino acid specificity by GlnRS cannot arise from hydrogen bonds donated by the cognate glutamine amide to these same moieties, as previously suggested. Instead, Arg30 functions as a negative determinant to drive binding of non-cognate glutamate into a non-productive orientation. The poorly differentiated cognate amino acid-binding site in GlnRS may be a consequence of the late emergence of this enzyme from the eukaryotic lineage of glutamyl-tRNA synthetases.
-Amino acid discrimination by a class I aminoacyl-tRNA synthetase specified by negative determinants.,Bullock TL, Uter N, Nissan TA, Perona JJ J Mol Biol. 2003 Apr 25;328(2):395-408. PMID:12691748<ref>PMID:12691748</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 1o0c" style="background-color:#fffaf0;"></div>
 ==See Also==
 *[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]]
-== References ==
-<references/>
 __TOC__
 </StructureSection>
-[[Category: Bacillus coli migula 1895]]
+[[Category: Escherichia coli]]
-[[Category: Glutamine--tRNA ligase]]
 [[Category: Large Structures]]
-[[Category: Bullock, T L]]
+[[Category: Bullock TL]]
-[[Category: Perona, J J]]
+[[Category: Perona JJ]]
-[[Category: Amino acid specificity]]
-[[Category: Engineered trna]]
-[[Category: Ligase-rna complex]]
-[[Category: Trna-protein complex]]