3rp6
From Proteopedia
(Difference between revisions)
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| - | [[ | + | ==Crystal Structure of Klebsiella pneumoniae HpxO complexed with FAD== |
| + | <StructureSection load='3rp6' size='340' side='right' caption='[[3rp6]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3rp6]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Klebsiella_pneumoniae_subsp._pneumoniae_mgh_78578 Klebsiella pneumoniae subsp. pneumoniae mgh 78578]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RP6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3RP6 FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rp7|3rp7]], [[3rp8|3rp8]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KPN78578_16330, KPN_01663 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=272620 Klebsiella pneumoniae subsp. pneumoniae MGH 78578])</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3rp6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rp6 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3rp6 RCSB], [http://www.ebi.ac.uk/pdbsum/3rp6 PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | HpxO is a flavin-dependent urate oxidase that catalyzes the hydroxylation of uric acid to 5-hydroxyisourate and functions in a novel pathway for purine catabolism found in Klebsiella pneumoniae. We have determined the structures of HpxO with and without uric acid at 2.0 A and 2.2 A, respectively. We have also determined the structure of the R204Q mutant at 2.0 A resolution in the absence of uric acid. The mutant structure is very similar to wild type HpxO except for the conformation of Arg103, which interacts with FAD in the mutant but not in the wild type structure. Interestingly, the R204Q mutation results in the uncoupling of NADH oxidation from uric acid hydroxylation. This suggests that Arg204 facilitates the deprotonation of uric acid activating it for the oxygen transfer. Based on these data, a mechanism for this reaction is proposed consisting of a nucleophilic attack of the urate anion on the flavin hydroperoxide resulting in the formation of 5-hydroxyisourate. | ||
| - | + | Structural and Mechanistic Studies of HpxO, a Novel FAD-dependent Urate Oxidase from Klebsiella pneumoniae.,Hicks KA, O'Leary SE, Begley TP, Ealick SE Biochemistry. 2012 Dec 21. PMID:23259842<ref>PMID:23259842</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | == References == | |
| - | + | <references/> | |
| - | == | + | __TOC__ |
| - | + | </StructureSection> | |
[[Category: Klebsiella pneumoniae subsp. pneumoniae mgh 78578]] | [[Category: Klebsiella pneumoniae subsp. pneumoniae mgh 78578]] | ||
| - | [[Category: Begley, T P | + | [[Category: Begley, T P]] |
| - | [[Category: Ealick, S E | + | [[Category: Ealick, S E]] |
| - | [[Category: Hicks, K A | + | [[Category: Hicks, K A]] |
| - | [[Category: Leary, S E.O | + | [[Category: Leary, S E.O]] |
[[Category: Fad-binding protein]] | [[Category: Fad-binding protein]] | ||
[[Category: Monooxygenase]] | [[Category: Monooxygenase]] | ||
[[Category: Oxidoreductase]] | [[Category: Oxidoreductase]] | ||
Revision as of 10:50, 9 December 2014
Crystal Structure of Klebsiella pneumoniae HpxO complexed with FAD
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