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Related Experiment Video

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How to Stabilize Protein: Stability Screens for Thermal Shift Assays and Nano Differential Scanning Fluorimetry in the Virus-X Project

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Published on: February 11, 2019

Protein stability, flexibility and function.

Kaare Teilum¹, Johan G Olsen, Birthe B Kragelund

¹Structural Biology and NMR Laboratory (SBiN-Lab), Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200 Copenhagen N, Denmark.

Biochimica Et Biophysica Acta

|November 25, 2010

Summary

Protein flexibility is crucial for function. This review explores how protein stability and ligand binding affinity are linked, identifying key flexibility hotspots important for both.

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Area of Science:

Biochemistry
Structural Biology
Protein Dynamics

Background:

Proteins require flexibility to interact with ligands and respond to environmental stimuli.
Mutations can alter protein flexibility, potentially affecting function, stability, and ligand binding.
The relationship between protein stability and ligand binding affinity remains ambiguous.

Purpose of the Study:

To review examples of proteins where stability changes impact ligand binding affinity.
To examine cases where protein stability and ligand affinity are uncorrelated.
To discuss the interplay between protein stability, flexibility, and binding affinity.

Main Methods:

Literature review of experimental and computational studies on protein dynamics.
Analysis of mutation data affecting protein stability and ligand binding.
Identification of flexibility hotspots in protein structures.

Main Results:

Examples demonstrate that altered protein stability can lead to changes in ligand binding affinity.
Some proteins exhibit uncorrelated changes in stability and affinity.
Specific protein regions, termed flexibility hotspots, are critical for both stability and ligand binding.

Conclusions:

A complex relationship exists between protein stability and ligand binding affinity.
Flexibility hotspots are key determinants of both protein stability and ligand recognition.
Understanding these relationships is vital for protein engineering and drug design.