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Marasmius scorodonius extracellular dimeric peroxidase - exploring its temperature and pressure stability
Matthias Pühse1, Renate T Szweda, Yingying Ma
1Physical Chemistry I - Biophysical Chemistry, Dortmund University of Technology, D-44227 Dortmund, Germany.
Biochimica Et Biophysica Acta
|April 7, 2009
Summary
Marasmius scorodonius peroxidase (MsP1) shows remarkable stability and function under high pressure and temperature. Its activity even doubles at 500 bar, suggesting industrial applications.
Area of Science:
- Biochemistry
- Enzymology
- Biophysics
Background:
- MsP1 is an uncommon peroxidase from the fungus Marasmius scorodonius.
- Understanding enzyme stability under extreme conditions is crucial for biotechnological applications.
Purpose of the Study:
- To investigate the temperature and pressure-dependent stability and function of MsP1.
- To explore the potential of MsP1 in industrial high-pressure applications.
Main Methods:
- Differential scanning calorimetry (DSC)
- Fluorescence spectroscopy
- Fourier-transform infrared (FTIR) spectroscopy
- Small-angle X-ray scattering (SAXS)
- Enzymatic activity assays
Main Results:
- MsP1 exhibits high thermostability up to 65°C and high pressure resistance up to 8-10 kbar.
- MsP1 activity increased twofold up to 500 bar and remained high at 2 kbar.
- Structural changes at ~500 bar may stabilize the enzymatic reaction transition state.
Conclusions:
- MsP1 demonstrates significant stability and enhanced activity under high pressure.
- MsP1 is a promising candidate for industrial applications involving high-pressure environments.
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