Induction and Catabolite Repression of Cellulase Synthesis in the Thermophilic Fungus Sporotrichum thermophile
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چکیده
منابع مشابه
Sporotrichum thermophile Growth, Cellulose Degradation, and Cellulase Activity.
The activity of components of the extracellular cellulase system of the thermophilic fungus Sporotrichum thermophile showed appreciable differences between strains; beta-glucosidase (EC 3.2.1.21) was the most variable component. Although its endoglucanase (EC 3.2.1.4) and exoglucanase (EC 3.2.1.91) activities were markedly lower, S. thermophile degraded cellulose faster than Trichoderma reesei....
متن کاملInduction of xylanase in thermophilic fungi Scytalidium thermophilum and Sporotrichum thermophile
Regulation of xylanase production in two thermophilic fungi Scytalidium thermophilum and Sporotrichum thermophile was investigated. The expression of xylanase was found to be inducible in both the cases. Various carbon sources were tested so as to identify the inducers. Soy flour and oat spelt xylan induced maximum level of xylanase in Scytalidium thermophilum and Sporotrichum thermophile respe...
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An extracellular enzyme from culture filtrates of Sporotrichum (Chrysosporium) thermophile (A.T.C.C. 42 464) after growth on cellulose or cellobiose was shown to oxidize cellobiose to cellobionic acid in vitro. Lactose and cellodextrins were also efficiently oxidized, but the enzyme was not active against most mono- and di-saccharides. Several redox substances could act as electron acceptors, b...
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The synthesis of aconitase in Bacillus subtilis wild-type and different citric acid cycle mutants has been studied and the influence of various growth conditions examined. Aconitase is induced by citrate and precursors of citrate and repressed by glutamate. Induction and repression counteract each other, and at equimolar concentrations of citrate and glutamate, aconitase synthesis is unaffected...
متن کاملInduction and Catabolite Repression of Glucosidases in Pseudomonas maltophilia.
Intracellular alpha-and beta-glucosidases were induced in cell suspensions of Pseu-domonas maltophilia by maltose or cellobiose, and the synthesis of these enzymes was sensitive to apparent catabolite repression by alpha-ketoglutarate.
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1979
ISSN: 0022-1287
DOI: 10.1099/00221287-110-2-291