title: L-2,3-diaminopropionate: one of the building blocks for the biosynthesis of Zwittermicin A in Bacillus thuringiensis subsp. kurstaki strain YBT-1520.
abstract: Zwittermicin A (ZwA) is a hybrid polyketide-non-ribosomal peptide that is thought to be biosynthesized from five proposed building blocks, including the 2,3-diaminopropionate. Candidate genes for de novo biosynthesis of 2,3-diaminopropionate, zwa5A and zwa5B, have been identified in a previous study. In this research, zwa5A was interrupted and chemically synthesized 2,3-diaminopropionate was used to feed the zwa5A(-) mutant. Results showed that feeding with 2,3-diaminopropionate restored the ability of the zwa5A(-) mutant to produce ZwA. Another non-ribosomal peptide synthase gene, designated orf3, was identified. Amino acid dependent PPi release assay showed that the adenylation domain ZWAA2 of ORF3 acyl-adenylated l-2,3-diaminopropionate effectively. Taken together, it can be concluded that l-2,3-diaminopropionate is indeed one of the building blocks for the biosynthesis of Zwittermicin A.
authors.affiliation: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
authors.forename: Changming
authors.initials: C
authors.lastname: Zhao
authors.forename: Chunxu
authors.initials: C
authors.lastname: Song
authors.forename: Yi
authors.initials: Y
authors.lastname: Luo
authors.forename: Ziniu
authors.initials: Z
authors.lastname: Yu
authors.forename: Ming
authors.initials: M
authors.lastname: Sun
mesh_terms: D000249:Adenosine Monophosphate / Q000378:metabolism; D001413:Bacillus thuringiensis / Q000235:genetics / Q000378:metabolism*; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D005798:Genes, Bacterial; D009154:Mutation; D010453:Peptide Synthases / Q000235:genetics / Q000378:metabolism; D010455:Peptides / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D015091:beta-Alanine / Q000031:analogs & derivatives* / Q000737:chemistry / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D010455:Peptides; D015091:beta-Alanine; C088290:zwittermicin A; D000249:Adenosine Monophosphate; C011757:2,3-diaminopropionic acid; D010453:Peptide Synthases; C104385:non-ribosomal peptide synthase