title: Crystallization and preliminary X-ray analysis of a bacterial L-amino-acid oxidase from Rhodococcus opacus.
abstract: L-Amino-acid oxidases (EC 1.4.3.2) catalyse the stereospecific oxidative deamination of an L-amino-acid substrate to an alpha-keto acid with the production of ammonia and hydrogen peroxide. In this study, the crystallization and preliminary X-ray analysis of a bacterial L-amino-acid oxidase from Rhodococcus opacus (RoLAAO) is described. RoLAAO is a dimeric protein consisting of two identical subunits of 489 amino acids with a calculated molecular weight of 54.2 kDa and a non-covalently bound FAD molecule. RoLAAO was crystallized by the vapour-diffusion method in two different space groups: P2(1)2(1)2(1) (unit-cell parameters a = 65.7, b = 109.7, c = 134.4 A) and C222(1) (unit-cell parameters a = 68.3, b = 88.4, c = 186.6 A). Both crystal forms diffracted X-rays to a resolution of at least 1.6 A.
authors.affiliation: Institute of Biochemistry, University of Cologne, Zuelpicher Strasse 47, 50674 Cologne, Germany.
authors.forename: Annette
authors.initials: A
authors.lastname: Faust
authors.forename: Birgit
authors.initials: B
authors.lastname: Geueke
authors.forename: Karsten
authors.initials: K
authors.lastname: Niefind
authors.forename: Werner
authors.initials: W
authors.lastname: Hummel
authors.forename: Dietmar
authors.initials: D
authors.lastname: Schomburg
mesh_terms: D003460:Crystallization / Q000379:methods; D018360:Crystallography, X-Ray; D050830:L-Amino Acid Oxidase / Q000737:chemistry*; D012240:Rhodococcus / Q000201:enzymology*
chemical_list: D050830:L-Amino Acid Oxidase