2e77: Difference between revisions
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'''Crystal structure of L-lactate oxidase with pyruvate complex''' | '''Crystal structure of L-lactate oxidase with pyruvate complex''' | ||
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[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Morimoto, Y.]] | [[Category: Morimoto, Y.]] | ||
[[Category: | [[Category: Fmn]] | ||
[[Category: | [[Category: Oxidoreductase]] | ||
[[Category: | [[Category: Tim barrel]] | ||
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Revision as of 23:03, 3 May 2008
Crystal structure of L-lactate oxidase with pyruvate complex
Overview
L-Lactate oxidase (LOX) from Aerococcus viridans catalyzes the oxidation of L-lactate to pyruvate by the molecular oxygen and belongs to a large family of 2-hydroxy acid-dependent flavoenzymes. To investigate the interaction of LOX with pyruvate in structural details and understand the chemical mechanism of flavin-dependent L-lactate dehydrogenation, the LOX-pyruvate complex was crystallized and the crystal structure of the complex has been solved at a resolution of 1.90 Angstrom. One pyruvate molecule bound to the active site and located near N5 position of FMN for subunits, A, B, and D in the asymmetric unit, were identified. The pyruvate molecule is stabilized by the interaction of its carboxylate group with the side-chain atoms of Tyr40, Arg181, His265, and Arg268, and of its keto-oxygen atom with the side-chain atoms of Tyr146, Tyr215, and His265. The alpha-carbon of pyruvate is found to be 3.13 Angstrom from the N5 atom of FMN at an angle of 105.4 degrees from the flavin N5-N10 axis.
About this Structure
2E77 is a Single protein structure of sequence from Aerococcus viridans. Full crystallographic information is available from OCA.
Reference
Crystallographic study on the interaction of L-lactate oxidase with pyruvate at 1.9 Angstrom resolution., Li SJ, Umena Y, Yorita K, Matsuoka T, Kita A, Fukui K, Morimoto Y, Biochem Biophys Res Commun. 2007 Jul 13;358(4):1002-7. Epub 2007 May 11. PMID:17517371 Page seeded by OCA on Sun May 4 02:03:41 2008