title: A nonribosomal peptide synthetase gene tzw1 is involved in zwittermicin A biosynthesis in Bacillus thuringiensis G03.
abstract: A 4.20-kb SspI fragment from Bacillus thuringiensis G03 was cloned and sequenced. Sequencing analysis revealed two complete open reading frames (ORF; tzw1 and tzw2), and one incomplete ORF (tzw3) (GenBank accession no. EU293887). Tzw1 encodes a putative nonribosomal peptide synthetase with thiolation and condensation domains localized at the C-termini, whereas tzw2 and tzw3 encode acyl carrier protein and Acyl-CoA dehydrogenase, respectively. To investigate the function of tzw1 in zwittermicin A (ZA) biosynthesis, an in-frame deletion of 1,461 bp within tzw1 was constructed. The mutant abolished ZA production. Complementation of the mutant with cloned tzw1 restored ZA productivity. These results revealed that tzw1 is required for ZA biosynthesis in B. thuringiensis G03.
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China.
authors.forename: Tiemei
authors.initials: T
authors.lastname: Shao
authors.forename: Linquan
authors.initials: L
authors.lastname: Bai
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.forename: Guangjun
authors.initials: G
authors.lastname: Wang
authors.forename: Daqun
authors.initials: D
authors.lastname: Liu
authors.forename: Zhuofu
authors.initials: Z
authors.lastname: Li
authors.forename: Jianmi
authors.initials: J
authors.lastname: Liu
authors.forename: Fuping
authors.initials: F
authors.lastname: Song
authors.forename: Dafang
authors.initials: D
authors.lastname: Huang
mesh_terms: D000213:Acyl Carrier Protein / Q000235:genetics; D042964:Acyl-CoA Dehydrogenase / Q000235:genetics; D000595:Amino Acid Sequence; D001413:Bacillus thuringiensis / Q000737:chemistry / Q000201:enzymology* / Q000235:genetics / Q000378:metabolism; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D053898:Biosynthetic Pathways; D003001:Cloning, Molecular; D020868:Gene Silencing; D005816:Genetic Complementation Test; D008969:Molecular Sequence Data; D005810:Multigene Family; D010453:Peptide Synthases / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D010455:Peptides / Q000235:genetics / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D017422:Sequence Analysis, DNA
chemical_list: D000213:Acyl Carrier Protein; D001426:Bacterial Proteins; D010455:Peptides; C088290:zwittermicin A; D042964:Acyl-CoA Dehydrogenase; D010453:Peptide Synthases