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Is allostery an intrinsic property of all dynamic proteins?

Gunasekaran, K., Ma, Buyong, Nussinov, Ruth·2004·Proteins: Structure, Function, and Bioinformatics

Abstract

Allostery involves coupling of conformational changes between two widely separated binding sites. The common view holds that allosteric proteins are symmetric oligomers, with each subunit existing in “at least” two conformational states with a different affinity for ligands. Recent observations such as the allosteric behavior of myoglobin, a classical example of a nonallosteric protein, call into question the existing allosteric dogma. Here we argue that all (nonfibrous) proteins are potentially allosteric. Allostery is a consequence of re‐distributions of protein conformational ensembles. In a nonallosteric protein, the binding site shape may not show a concerted second‐site change and enzyme kinetics may not reflect an allosteric transition. Nevertheless, appropriate ligands, point mutations, or external conditions may facilitate a population shift, leading a presumably nonallosteric protein to behave allosterically. In principle, practically any potential drug binding to the protein surface can alter the conformational redistribution. The question is its effectiveness in the redistribution of the ensemble, affecting the protein binding sites and its function. Here, we review experimental observations validating this view of protein allostery. Proteins 2004. © 2004 Wiley‐Liss, Inc.

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Metadata

Authors
Gunasekaran, K., Ma, B., & Nussinov, R.
Venue
Proteins: Structure, Function, and Bioinformatics
Publisher
Wiley
Published
2004-07-22
Volume
57
Issue
3
Pages
433-443
ISSN
  • 0887-3585 (ISSN-L)
  • 1097-0134
OpenAlex
W2049682677
Cited by
879
References
3
FWCI
7.22
Type
journal article
Language
en
Open access
closed

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