4dbf
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structures of Cg1458== | |
| + | <StructureSection load='4dbf' size='340' side='right'caption='[[4dbf]], [[Resolution|resolution]] 1.90Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[4dbf]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Corynebacterium_glutamicum Corynebacterium glutamicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DBF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4DBF 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]] 1.9Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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=4dbf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4dbf OCA], [https://pdbe.org/4dbf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4dbf RCSB], [https://www.ebi.ac.uk/pdbsum/4dbf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4dbf ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/Q8NQY2_CORGL Q8NQY2_CORGL] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Cg1458 was recently characterized as a novel soluble oxaloacetate decarboxylase. However, sequence alignment identified that Cg1458 has no similarity with other oxaloacetate decarboxylases and instead belongs to the fumarylacetoacetate hydrolase (FAH) family. Differences in the function of Cg1458 and other FAH proteins may suggest a different catalytic mechanism. To help elucidate the catalytic mechanism of Cg1458, crystal structures of Cg1458 in both the open and closed conformations have been determined for the first time up to a resolution of 1.9 A and 2.0 A, respectively. Comparison of both structures and detailed biochemical studies confirmed the presence of a catalytic lid domain which is missing in the native enzyme structure. In this lid domain, a Glu-His dyad was found critical in mediating enzymatic catalysis. Based on structure modeling and comparison as well as large-scale sequence alignment studies, we further determined that the catalytic mechanism of Cg1458 is actually through a Glu-His-Water triad, and this catalytic triad is common among FAH family proteins that catalyze the cleavage of the C-C bond of the substrate. Two sequence motifs, HxxE and Hxx***xxE have been identified as the basis for this mechanism. | ||
| - | + | Crystal structures of Cg1458 reveal a catalytic lid domain and a common catalytic mechanism for FAH family.,Ran T, Gao Y, Marsh M, Zhu W, Wang M, Mao X, Xu L, Xu D, Wang W Biochem J. 2012 Oct 10. PMID:23046410<ref>PMID:23046410</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| + | </div> | ||
| + | <div class="pdbe-citations 4dbf" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Corynebacterium glutamicum]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Gao YY]] | ||
| + | [[Category: Ran TT]] | ||
| + | [[Category: Wang MT]] | ||
| + | [[Category: Wang WW]] | ||
| + | [[Category: Xu DQ]] | ||
Current revision
Crystal structures of Cg1458
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