1qe0: Difference between revisions

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-[[Image:1qe0.gif|left|200px]]
-<!--
-The line below this paragraph, containing "STRUCTURE_1qe0", creates the "Structure Box" on the page.
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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-{{STRUCTURE_1qe0|  PDB=1qe0  |  SCENE=  }}
-'''CRYSTAL STRUCTURE OF APO S. AUREUS HISTIDYL-TRNA SYNTHETASE'''
+==CRYSTAL STRUCTURE OF APO S. AUREUS HISTIDYL-TRNA SYNTHETASE==
+<StructureSection load='1qe0' size='340' side='right'caption='[[1qe0]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1qe0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QE0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QE0 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]] 2.7&#8491;</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=1qe0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qe0 OCA], [https://pdbe.org/1qe0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qe0 RCSB], [https://www.ebi.ac.uk/pdbsum/1qe0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qe0 ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/SYH_STAAU SYH_STAAU]
+== 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/qe/1qe0_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1qe0 ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The crystal structure of the Staphylococcus aureus histidyl-tRNA synthetase apoprotein has been determined at 2.7 A resolution. Several important loops in the active site either become disordered or adopt very different conformations compared to their ligand-bound states. These include the histidine A motif (Arg257-Tyr262) that is essential for substrate recognition, a loop (Gly52-Lys62) that seems to control the communication between the histidine and ATP binding sites, the motif 2 loop (Glu114-Arg120) that binds ATP, and the insertion domain that is likely to bind tRNA. These ligand-induced structural changes are supported by fluorescence experiments, which also suggest highly cooperative dynamics. A dynamic and cooperative active site is most likely necessary for the proper functioning of the histidyl-tRNA synthetase, and suggests a novel mechanism for improving charging fidelity.
-==Overview==
+Cooperative structural dynamics and a novel fidelity mechanism in histidyl-tRNA synthetases.,Qiu X, Janson CA, Blackburn MN, Chhohan IK, Hibbs M, Abdel-Meguid SS Biochemistry. 1999 Sep 21;38(38):12296-304. PMID:10493797<ref>PMID:10493797</ref>
-The crystal structure of the Staphylococcus aureus histidyl-tRNA synthetase apoprotein has been determined at 2.7 A resolution. Several important loops in the active site either become disordered or adopt very different conformations compared to their ligand-bound states. These include the histidine A motif (Arg257-Tyr262) that is essential for substrate recognition, a loop (Gly52-Lys62) that seems to control the communication between the histidine and ATP binding sites, the motif 2 loop (Glu114-Arg120) that binds ATP, and the insertion domain that is likely to bind tRNA. These ligand-induced structural changes are supported by fluorescence experiments, which also suggest highly cooperative dynamics. A dynamic and cooperative active site is most likely necessary for the proper functioning of the histidyl-tRNA synthetase, and suggests a novel mechanism for improving charging fidelity.
-==About this Structure==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-QE0 is a [[Single protein]] structure of 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=1QE0 OCA].
+</div>
+<div class="pdbe-citations 1qe0" style="background-color:#fffaf0;"></div>
-==Reference==
+==See Also==
-Cooperative structural dynamics and a novel fidelity mechanism in histidyl-tRNA synthetases., Qiu X, Janson CA, Blackburn MN, Chhohan IK, Hibbs M, Abdel-Meguid SS, Biochemistry. 1999 Sep 21;38(38):12296-304. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10493797 10493797]
+*[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]]
-[[Category: Histidine--tRNA ligase]]
+== References ==
-[[Category: Single protein]]
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Large Structures]]
 [[Category: Staphylococcus aureus]]
-[[Category: Abdel-Meguid, S S.]]
+[[Category: Abdel-Meguid SS]]
-[[Category: Blackburn, M N.]]
+[[Category: Blackburn MN]]
-[[Category: Chohan, I K.]]
+[[Category: Chohan IK]]
-[[Category: Hibbs, M.]]
+[[Category: Hibbs M]]
-[[Category: Janson, C A.]]
+[[Category: Janson CA]]
-[[Category: Qiu, X.]]
+[[Category: Qiu X]]
-[[Category: Beta sheet]]
-[[Category: Class ii trna synthetase]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 06:10:27 2008''