2ji7: Difference between revisions

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-[[Image:2ji7.png|left|200px]]
+==X-RAY STRUCTURE OF OXALYL-COA DECARBOXYLASE WITH COVALENT REACTION INTERMEDIATE==
+<StructureSection load='2ji7' size='340' side='right' caption='[[2ji7]], [[Resolution|resolution]] 1.82&Aring;' scene=''>
+== Structural highlights ==
+[[2ji7]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Oxalobacter_formigenes Oxalobacter formigenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JI7 OCA]. <br>
+<b>Related:</b> [[2c31|2c31]], [[2ji6|2ji6]], [[2ji8|2ji8]], [[2ji9|2ji9]], [[2jib|2jib]]<br>
+<b>Activity:</b> <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span><br>
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ji/2ji7_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/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+== Publication Abstract from PubMed ==
+Despite more than five decades of extensive studies of thiamin diphosphate (ThDP) enzymes, there remain many uncertainties as to how these enzymes achieve their rate enhancements. Here, we present a clear picture of catalysis for the simple nonoxidative decarboxylase, oxalyl-coenzyme A (CoA) decarboxylase, based on crystallographic snapshots along the catalytic cycle and kinetic data on active site mutants. First, we provide crystallographic evidence that, upon binding of oxalyl-CoA, the C-terminal 13 residues fold over the substrate, aligning the substrate alpha-carbon for attack by the ThDP-C2 atom. The second structure presented shows a covalent reaction intermediate after decarboxylation, interpreted as being nonplanar. Finally, the structure of a product complex is presented. In accordance with mutagenesis data, no side chains of the enzyme are implied to directly participate in proton transfer except the glutamic acid (Glu-56), which promotes formation of the 1',4'-iminopyrimidine tautomer of ThDP needed for activation.
-<!--
+Crystallographic snapshots of oxalyl-CoA decarboxylase give insights into catalysis by nonoxidative ThDP-dependent decarboxylases.,Berthold CL, Toyota CG, Moussatche P, Wood MD, Leeper F, Richards NG, Lindqvist Y Structure. 2007 Jul;15(7):853-61. PMID:17637344<ref>PMID:17637344</ref>
-The line below this paragraph, containing "STRUCTURE_2ji7", 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),
-or leave the SCENE parameter empty for the default display.
--->
-{{STRUCTURE_2ji7|  PDB=2ji7  |  SCENE=  }}
-===X-RAY STRUCTURE OF OXALYL-COA DECARBOXYLASE WITH COVALENT REACTION INTERMEDIATE===
+From MEDLINEÂ®/PubMedÂ®, a database of the U.S. National Library of Medicine.<br>
+== References ==
+<references/>
-<!--
+__TOC__
-The line below this paragraph, {{ABSTRACT_PUBMED_17637344}}, adds the Publication Abstract to the page
+</StructureSection>
-(as it appears on PubMed at http://www.pubmed.gov), where 17637344 is the PubMed ID number.
--->
-{{ABSTRACT_PUBMED_17637344}}
-==About this Structure==
-[[2ji7]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Oxalobacter_formigenes Oxalobacter formigenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JI7 OCA].
-==Reference==
-<ref group="xtra">PMID:017637344</ref><references group="xtra"/>
 [[Category: Oxalobacter formigenes]]
 [[Category: Oxalyl-CoA decarboxylase]]