title: Identification and purification of the 69-kDa intracellular protease involved in the proteolytic processing of the crystal delta-endotoxin of Bacillus thuringiensis subsp. tenebrionis.
abstract: The dynamics of appearance of intracellular proteases in relation to the synthesis of crystal delta-endotoxin was studied to identify the native intracellular protease(s) involved in the proteolytic processing of the 73-kDa protoxin of Bacillus thuringiensis subsp. tenebrionis. In vitro proteolytic activation of the 73-kDa protoxin indicated the possible role of 69-kDa protease in the proteolytic processing of 73-kDa protoxin. The purified 69-kDa protease was able to cause the proteolytic activation of the 73-kDa protoxin to 68-kDa toxin and this conversion was inhibited by ethylenediamine tetraacetic acid and 1,10-phenanthroline.
authors.affiliation: Department of Biochemistry, Osmania University, Hyderabad, India.
authors.forename: S T
authors.initials: ST
authors.lastname: Reddy
authors.forename: N S
authors.initials: NS
authors.lastname: Kumar
authors.forename: G
authors.initials: G
authors.lastname: Venkateswerlu
mesh_terms: D001413:Bacillus thuringiensis / Q000201:enzymology* / Q000254:growth & development / Q000378:metabolism; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000378:metabolism*; D001427:Bacterial Toxins; D004591:Electrophoresis, Polyacrylamide Gel; D010450:Endopeptidases / Q000302:isolation & purification* / Q000378:metabolism*; D004731:Endotoxins / Q000378:metabolism*; D006460:Hemolysin Proteins; D006801:Humans; D015151:Immunoblotting; D008666:Metalloendopeptidases / Q000378:metabolism*; D011480:Protease Inhibitors / Q000494:pharmacology
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004731:Endotoxins; D006460:Hemolysin Proteins; D011480:Protease Inhibitors; C030956:insecticidal crystal protein, Bacillus Thuringiensis; D010450:Endopeptidases; D008666:Metalloendopeptidases