title: An insect toxin from spores of Bacillus thuringiensis and Bacillus cereus.
abstract: Spores of Bacillus thuringiensis contain a toxin active against lepidopterous larvae. This toxin can be solubilized by extraction with reagents which dissolve the protein crystal of B thuringiensis. It is inactivated by crystal-specific antiserum. Spores of Bacillus cereus contain a similar toxin although the specific activity is much lower than the spores of B. thuringiensis. The B. cereus toxin contains a single major polypeptidecomponent. Toxic activity can be solubliized from spores of both species by incubation with gut juices from Pieris brassicae.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D001409:Bacillus cereus / Q000032:analysis* / Q000276:immunology; D001413:Bacillus thuringiensis / Q000032:analysis* / Q000276:immunology; D001426:Bacterial Proteins / Q000032:analysis / Q000276:immunology / Q000633:toxicity; D002850:Chromatography, Gel; D003429:Cross Reactions; D003461:Crystallography; D004591:Electrophoresis, Polyacrylamide Gel; D005779:Immunodiffusion; D007814:Larva / Q000187:drug effects; D007915:Lepidoptera / Q000187:drug effects; D010455:Peptides / Q000032:analysis; D012995:Solubility; D013171:Spores, Bacterial / Q000032:analysis / Q000276:immunology; D014118:Toxins, Biological / Q000032:analysis / Q000276:immunology / Q000633:toxicity
chemical_list: D000596:Amino Acids; D001426:Bacterial Proteins; D010455:Peptides; D014118:Toxins, Biological