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Complete genome sequence of Bacillus thuringiensis serovar alesti BGSC 4C1, a typical strain with toxicity to Lepidoptera insects

Wang, Yueying, Fu, Jingjing, Zhu, Qian, Zhu, Lei, Zheng, Jinshui, Liu, Hualin, Peng, Donghai, Ruan, Lifang, Sun, Ming
Journal of biotechnology 2016 v.239 pp. 61-64
Bacillus thuringiensis subsp. alesti, Lepidoptera, antimicrobial peptides, bacteriocins, chromosomes, insect larvae, insecticidal proteins, insects, multigene family, nucleotide sequences, operon, plasmids, secondary metabolites, serotypes, toxicity, virulence
Bacillus thuringiensis serovar alesti was used to control caterpillars from 1970s. Here we reported the complete genome of BGSC 4C1, the type strain of this serovar. It has a circular chromosome and six plasmids. The largest plasmid pBMB267 contains five insecticidal crystal protein genes (two copies of cry1Ae, cry1Gb, cry2Ab, and a novel cry1M-type gene) and three vegetative insecticidal protein genes (a novel binary toxin gene operon vip1-vip2 and vip3Aa). Besides, the strain also has many genes encodeing virulence factors, and some secondary metabolite biosynthetic gene clusters involved in synthesis of antimicrobial peptides and bacteriocins. In addition, there is a poly γ-glutamate synthesis gene cluster, whose product is a candidate to control inflammasome-mediated disorders and potential in many other fields.