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Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.90 no.1 Rio de Janeiro Jan./Feb. 1995

https://doi.org/10.1590/S0074-02761995000100018 

Biochemistry and mode of action of the Bacillus sphaericus toxins

Elizabeth W Davidson1 

Arizona State University, Department of Zoology, Tempe, USA


ABSTRACT

Bacillus sphaericus produces at least two toxins which are highly toxic to mosquito larvae. The binary toxin, which is comprised of proteins of 51.4 and 41.9 kDa, is present in all highly insecticidal strains. The 100 kDa SSII-1 toxin is present in most highly insecticidal as well as the weakly insecticidal strains. The current status of studies on biochemistry and mode of action of these toxins is reviewed.

 

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