title: Crystal structure of a putative pyridoxine 5'-phosphate oxidase (Rv2607) from Mycobacterium tuberculosis.
abstract: The three-dimensional structure of Rv2607, a putative pyridoxine 5'-phosphate oxidase (PNPOx) from Mycobacterium tuberculosis, has been determined by X-ray crystallography to 2.5 A resolution. Rv2607 has a core domain similar to known PNPOx structures with a flavin mononucleotide (FMN) cofactor. Electron density for two FMN at the dimer interface is weak despite the bright yellow color of the protein solution and crystal. The shape and size of the putative binding pocket is markedly different from that of members of the PNPOx family, which may indicate some significant changes in the FMN binding mode of this protein relative to members of the family.
authors.affiliation: Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. jpdlcq@lanl.gov
authors.forename: Jean-Denis
authors.initials: JD
authors.lastname: Pédelacq
authors.forename: Beom-Seop
authors.initials: BS
authors.lastname: Rho
authors.forename: Chang-Yub
authors.initials: CY
authors.lastname: Kim
authors.forename: Geoffrey S
authors.initials: GS
authors.lastname: Waldo
authors.forename: Timothy P
authors.initials: TP
authors.lastname: Lekin
authors.forename: Brent W
authors.initials: BW
authors.lastname: Segelke
authors.forename: Bernhard
authors.initials: B
authors.lastname: Rupp
authors.forename: Li-Wei
authors.initials: LW
authors.lastname: Hung
authors.forename: Su-Il
authors.initials: SI
authors.lastname: Kim
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Terwilliger
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry* / Q000378:metabolism; D003001:Cloning, Molecular; D017124:Conserved Sequence; D018360:Crystallography, X-Ray; D019281:Dimerization; D029968:Escherichia coli Proteins / Q000737:chemistry / Q000378:metabolism; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009169:Mycobacterium tuberculosis / Q000201:enzymology* / Q000235:genetics; D016133:Polymerase Chain Reaction; D017510:Protein Folding; D017433:Protein Structure, Secondary; D011734:Pyridoxaminephosphate Oxidase / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D011994:Recombinant Proteins / Q000737:chemistry / Q000378:metabolism; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
chemical_list: D001426:Bacterial Proteins; D029968:Escherichia coli Proteins; D011994:Recombinant Proteins; D011734:Pyridoxaminephosphate Oxidase