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Isolation and identification of trehalase from Pullularia pullulans
Journal of Bacteriology
|June 1, 1971
Summary
Researchers isolated and purified trehalase from Pullularia pullulans. This enzyme specifically targets trehalose, with optimal activity at pH 4.0 and a K(m) of 3.2 x 10(-3)m.
Area of Science:
- Enzymology
- Microbiology
- Biochemistry
Background:
- Trehalase enzymes play a crucial role in carbohydrate metabolism.
- Understanding trehalase from microbial sources like Pullularia pullulans is important for biotechnological applications.
Purpose of the Study:
- To isolate and characterize trehalase from the fungus Pullularia pullulans.
- To determine the enzyme's specificity, optimal conditions, and kinetic parameters.
Main Methods:
- Isolation of trehalase from Pullularia pullulans.
- Purification of the enzyme to approximately 800-fold.
- Determination of optimal pH and Michaelis dissociation constant (K(m)).
Main Results:
- Trehalase was successfully isolated and purified from Pullularia pullulans.
- The purified enzyme exhibited specificity for trehalose.
- Optimal activity was observed at pH 4.0.
- The Michaelis dissociation constant (K(m)) was determined to be 3.2 x 10(-3)m.
Conclusions:
- Pullularia pullulans produces a trehalase enzyme with specific activity towards trehalose.
- The characterized kinetic and pH profile provides valuable data for potential industrial or research applications of this enzyme.