Influence of pH on the formation and location of beta-glucosidase in Aspergillus terreus grown on ceLlulose
Language English Country United States Media print
Document type Journal Article
PubMed
6815035
DOI
10.1007/bf02883132
Knihovny.cz E-resources
- MeSH
- Aspergillus enzymology MeSH
- Bacterial Proteins metabolism MeSH
- beta-Glucosidase metabolism MeSH
- Cellulose metabolism MeSH
- Glucosidases metabolism MeSH
- Hydrogen-Ion Concentration MeSH
- Culture Media MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Bacterial Proteins MeSH
- beta-Glucosidase MeSH
- Cellulose MeSH
- Glucosidases MeSH
- Culture Media MeSH
Wild strain of Aspergillus terreus is very good producer of beta-glucosidase. It produces 15 nkat/mL (0.9 IU/mL) of extraceLlular beta-glucosidase at pH 5.0. The medium pH level strongly affects the production and binding of beta-glucosidase on the cells and on residual cellulose. At pH 4.0 the rate of enzyme synthesis and the level of total activity is highest but 60-75% of this activity is bound. At higher pH levels the enzyme is mainly released to the medium.
