Binding leverage as a molecular basis for allosteric regulation.

Area of Science:

• Biochemistry
• Structural Biology
• Computational Biology

Background:

• Allosteric regulation is mediated by effector molecules inducing protein conformational changes.
• Understanding protein dynamics is crucial for identifying functional and regulatory sites.

Purpose of the Study:

• Introduce and define 'binding leverage' as a measure of site-motion coupling.
• Evaluate the utility of binding leverage in identifying functional sites across various proteins.
• Explore implications for predicting allosteric sites and drug design.

Main Methods:

• Utilized Monte Carlo simulations to identify potential binding sites.
• Employed normal modes and crystal structure pairs to model protein dynamics.
• Analyzed catalytic domains and multimeric allosteric enzymes.

Main Results:

• Identified high binding leverage for both catalytic and allosteric sites in most analyzed proteins.
• Demonstrated that allosteric regulation without conformational change involves different motions.
• Binding leverage can be calculated from a single crystal structure.

Conclusions:

• Protein dynamics are essential for predicting functional sites.
• Binding leverage offers a novel approach for characterizing proteins and identifying allosteric sites.
• This method has significant implications for drug discovery and design.