Laccase Engineering: Redox Potential Is Not the Only Activity-Determining Feature in the Metalloproteins.
Misha Ali1, Priyanka Bhardwaj1, Hassan Mubarak Ishqi2
1Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India.
Molecules (Basel, Switzerland)
|September 9, 2023
Summary
Engineering metalloproteins like laccase aims to boost redox potential for wider industrial use. Focusing on the substrate binding site
Area of Science:
- Biochemistry
- Enzyme Engineering
Background:
- Laccases are multicopper oxidases with broad substrate range and water as a by-product.
- Low redox potential limits laccase applications, necessitating protein engineering.
Purpose of the Study:
- To review key features of the laccase active site for enhancing redox potential.
- To identify targets for future laccase engineering.
Main Methods:
- Review of existing literature on laccase structure-function relationships.
- Analysis of factors influencing enzyme activity and specificity.
Main Results:
- Redox potential is a key limitation for laccase applications.
- Substrate binding site characteristics, including electrostatic, hydrophobic, and steric factors, regulate activity.
- Substrate orientation relative to the T1 site is crucial.
Conclusions:
- Engineering the substrate binding site offers a promising strategy to improve laccase performance.
- Understanding these features is vital for rational enzyme design.
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