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Updated: May 5, 2026
09:01
Mutagenesis and Functional Selection Protocols for Directed Evolution of Proteins in E. coli
Published on: March 16, 2011
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Engineering the native ensemble to tune protein function: Diverse mutational strategies and interlinked molecular
Adithi Kannan1, Athi N Naganathan1
1Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India.
Current Opinion in Structural Biology
|October 11, 2024
Summary
Protein engineering can tune function by altering backbone entropy, charge interactions, and loops. Understanding the whole interaction network is key to predicting mutation effects and protein evolution.
Area of Science:
- Biochemistry
- Structural Biology
- Protein Engineering
Background:
- Proteins are sensitive to sequence and environmental changes.
- Mutations can affect protein stability, dynamics, and function.
Purpose of the Study:
- To explore diverse strategies for engineering protein function via mutations.
- To understand how mutations influence protein conformational landscapes and allostery.
Main Methods:
- Analysis of mutations affecting backbone conformational entropy.
- Investigation of charge-charge interactions and their role in protein function.
- Examination of mutations in loops and hinge regions far from the active site.
Main Results:
- Mutations can modulate protein function through changes in native-state stability, thermodynamic coupling, dynamics, and conformational substate populations.
- Long-range effects of mutations are pervasive, influencing the entire protein interaction network.
- Numerous microscopic variations in residues and interactions can tune protein function.
Conclusions:
- A holistic approach considering the entire protein interaction network is crucial for understanding mutational effects.
- Mapping the native conformational landscape provides context for allostery and protein evolution.
- Protein engineering strategies can leverage diverse mutation types to achieve functional modulation.
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