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  • Title: [Proteinases in growth and spore formation of Bacillus thuringiensis].
    Author: Chestukhina GG, Kotova TS, Zalunin IA, Stepanov VM.
    Journal: Biokhimiia; 1979 May; 44(5):796-802. PubMed ID: 454710.
    Abstract:
    Some serine proteases and leucine aminopeptidases were detected inside and outside the cells during the analysis of three crystalline and two acrystalline strains of Bac. thuringiensis var. galleriae. The data obtained on the protease formation during growth and sporulation and the level of their activity are indicative of intracellular proteases involvement in spore- and crystal formation. The enzymes isolated from the culture medium do not probably take part in these processes. The intracellular enzymes may account for the different crystal protein composition of various strains due to limited proteolysis of crystal proteins in the course of biosynthesis.
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