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© Research
Publication : Journal of bacteriology

A Bacillus thuringiensis subsp. israelensis gene encoding a 125-kilodalton larvicidal polypeptide is associated with inverted repeat sequences.

Team: Group: Catherine Bourgouin
Team: Ecology and Emergence of Arthropod-borne Pathogens
Member: Catherine Bourgouin
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of bacteriology - 01 Aug 1988

Bourgouin C, Delécluse A, Ribier J, Klier A, Rapoport G,

Link to Pubmed [PMID] – 2841292

J. Bacteriol. 1988 Aug; 170(8): 3575-83

A gene encoding a 125-kilodalton (kDa) mosquitocidal delta-endotoxin was cloned from the 72-MDa resident plasmid of Bacillus thuringiensis subsp. israelensis. This gene is similar in its 3′ region to the gene encoding the 135-kDa protein previously cloned (C. Bourgouin, A. Klier, and G. Rapoport, Mol. Gen. Genet. 205:390-397, 1986). Escherichia coli recombinant clones harboring the 125-kDa gene were toxic to larvae of the three mosquito species Aedes aegypti, Anopheles stephensi, and Culex pipiens. In addition, the B. thuringiensis subsp. israelensis DNA fragment carrying the 125-kDa protein gene contains two sets of inverted repeat sequences, identified either by the S1 nuclease method or by electron microscopic observation. The structural organization of inverted repeat sequences and of the 125-kDa gene was analyzed and suggests that this B. thuringiensis subsp. israelensis delta-endotoxin gene is located within a transposable element.