Two types of entomocidal crystals of Bacillus thuringiensis ssp. finitimus have the same set of unique delta-endotoxins

The strain B-1166 differs from the other strains of Bacillus thuringiensis ssp. finitimus because it has two crystal types with different localization in the sporulating cell, i.e., inside and outside of exosporium membrane. Two dissociants of the strain were obtained containing only one of the crys...

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Bibliographic Details
Published inBiochemistry (Moscow) Vol. 64; no. 10; p. 1122
Main Authors Revina, L P, Zalunin, I A, Krieger, I V, Tulina, N M, Wojciechowska, Y A, Levitin, E I, Chestukhina, G G, Stepanov, V M
Format Journal Article
LanguageEnglish
Published United States 01.10.1999
Subjects
Amino Acid Sequence
Bacillus thuringiensis - chemistry
Bacillus thuringiensis - ultrastructure
Bacterial Proteins - chemistry
Bacterial Toxins - chemistry
Chromatography, Ion Exchange
Electrophoresis, Polyacrylamide Gel
Endotoxins - chemistry
Hemolysin Proteins
Immunodiffusion
Microscopy, Electron
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Summary:The strain B-1166 differs from the other strains of Bacillus thuringiensis ssp. finitimus because it has two crystal types with different localization in the sporulating cell, i.e., inside and outside of exosporium membrane. Two dissociants of the strain were obtained containing only one of the crystal types. The initial strain produces at least three various delta-endotoxins (Fin2, Fin3, and Fin5) differing from all other known entomocidal proteins; Fin2 and Fin3 are similar to each other but differ from Fin5. Both crystal types contain the same endotoxins (Fin2, Fin3, and Fin5). In the B-1166 strain the site of crystal deposition is not determined by their protein composition.
ISSN:0006-2979