6a19 | pdb_00006a19

Mandelate oxidase mutant-Y128F with Benzoylformic acid

spinqualitylabelsall models 6a19, resolution 1.55Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6a19 is a 1 chain structure with sequence from "streptomyces_orientalis"_pittenger_and_brigham_1956 "streptomyces orientalis" pittenger and brigham 1956. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 173, FMN Gene: hmo ("Streptomyces orientalis" Pittenger and Brigham 1956) Activity: 4-hydroxymandelate oxidase, with EC number 1.1.3.46 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [HMO_AMYOR] Catalyzes the oxidation of p-hydroxymandelate to p-hydroxybenzoylformate in the biosynthesis of L-(4-hydroxyphenyl)glycine and L-(3,5-dihydroxyphenyl)glycine, 2 non-proteinogenic amino acids occurring in the vancomycin group of antibiotics. Publication Abstract from PubMed p-Hydroxymandelate oxidase (Hmo) is a flavin mononucleotide (FMN)-dependent enzyme that oxidizes mandelate to benzoylformate. How the FMN-dependent oxidation is executed by Hmo remains unclear at the molecular level. A continuum of snapshots from crystal structures of Hmo and its mutants in complex with physiological/nonphysiological substrates, products and inhibitors provides a rationale for its substrate enantioselectivity/promiscuity, its active-site geometry/reactivity and its direct hydride-transfer mechanism. A single mutant, Y128F, that extends the two-electron oxidation reaction to a four-electron oxidative decarboxylation reaction was unexpectedly observed. Biochemical and structural approaches, including biochemistry, kinetics, stable isotope labeling and X-ray crystallography, were exploited to reach these conclusions and provide additional insights. Biochemical and structural explorations of alpha-hydroxyacid oxidases reveal a four-electron oxidative decarboxylation reaction.,Yeh HW, Lin KH, Lyu SY, Li YS, Huang CM, Wang YL, Shih HW, Hsu NS, Wu CJ, Li TL Acta Crystallogr D Struct Biol. 2019 Aug 1;75(Pt 8):733-742. doi:, 10.1107/S2059798319009574. Epub 2019 Jul 30. PMID:31373572 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Journal:Acta Cryst D:S2059798319009574

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