title: The gene CBO0515 from Clostridium botulinum strain Hall A encodes the rare enzyme N5-(carboxyethyl) ornithine synthase, EC 1.5.1.24.
abstract: Sequencing of the genome of Clostridium botulinum strain Hall A revealed a gene (CBO0515), whose putative amino acid sequence was suggestive of the rare enzyme N(5)-(1-carboxyethyl) ornithine synthase. To test this hypothesis, CBO0515 has been cloned, and the encoded polypeptide was purified and characterized. This unusual gene appears to be confined to proteolytic strains assigned to group 1 of C. botulinum.
authors.affiliation: Microbial Biochemistry and Genetics Unit, Oral Infection and Immunity Branch, NIDCR, National Institutes of Health, Bethesda, MD 20892, USA. jthompson@dir.nidcr.nih.gov
authors.forename: John
authors.initials: J
authors.lastname: Thompson
authors.forename: Karen K
authors.initials: KK
authors.lastname: Hill
authors.forename: Theresa J
authors.initials: TJ
authors.lastname: Smith
authors.forename: Andreas
authors.initials: A
authors.lastname: Pikis
mesh_terms: D000594:Amino Acid Oxidoreductases / Q000235:genetics* / Q000378:metabolism*; D000595:Amino Acid Sequence; D001665:Binding Sites / Q000235:genetics; D003001:Cloning, Molecular; D003014:Clostridium botulinum / Q000201:enzymology* / Q000235:genetics*; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D016680:Genome, Bacterial; D007700:Kinetics; D053858:Metabolic Networks and Pathways; D008969:Molecular Sequence Data; D009952:Ornithine / Q000378:metabolism*; D011994:Recombinant Proteins / Q000302:isolation & purification / Q000378:metabolism; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D013379:Substrate Specificity
chemical_list: D004269:DNA, Bacterial; D011994:Recombinant Proteins; D009952:Ornithine; D000594:Amino Acid Oxidoreductases; C064774:N(5)-(carboxyethyl)ornithine synthase