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Catabolite repression of cellulase biosynthesis in Streptomyces albaduncus
Author(s) -
Harchand R. K.,
Singh S.
Publication year - 1994
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.3620340603
Subject(s) - catabolite repression , cellulase , glycerol , protease , chemistry , proteases , biochemistry , fed batch culture , biosynthesis , psychological repression , enzyme , food science , fermentation , mutant , gene expression , gene
The cellulase complex of S. albaduncus was found to undergo catabolite repression in the presence of glycerol accompanied by a decrease in the pH of the medium. The results of the experiments conducted at two different initial pH of the medium suggested that pH effect as well as proteases were involved in the inactivation of glucanases (exoglucanase and endoglucanase) whereas β‐glucosidase inactivation was solely due to ‘pH effect’. It was also apparent that pH change followed by the addition of glycerol caused alterations in protease activities as well as pattern of their production.