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[Long-term stability of enzymes in solution].
Biomedica Biochimica Acta
|January 1, 1987
Summary
This study introduces a faster method for finding enzyme stabilizers by analyzing inactivation rates at higher temperatures. This approach accelerates the discovery of substances that protect enzymes during long-term, low-temperature storage.
Area of Science:
- Biochemistry
- Enzymology
- Protein Chemistry
Context:
- Enzyme preparations require stabilization for long-term storage at low temperatures.
- Understanding inactivation mechanisms is crucial for developing effective stabilization strategies.
- Traditional methods for identifying stabilizers are time-consuming.
Purpose:
- To reveal the primary factors influencing enzyme inactivation during low-temperature storage.
- To develop a method for rapidly screening and identifying enzyme stabilizing substances.
- To investigate the temperature dependence of enzyme inactivation using Arrhenius plots.
Summary:
- Two proteases (thermitase, subtilisin Carlsberg) and urate oxidase were studied for inactivation kinetics.
- Linear Arrhenius plots were observed for all enzymes, even with stabilizers.
- This linearity allows extrapolation of stabilizer efficacy from higher temperatures to storage conditions (0-10°C).
Impact:
- Enables significantly faster experimental screening for enzyme stabilizers.
- Facilitates the discovery of effective stabilizer combinations, demonstrated for urate oxidase.
- Provides insights into the mechanisms of enzyme stabilization during cold storage.