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Current Topics in Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1568-0266
ISSN (Online): 1873-4294

Targeting Allosteric Control Mechanisms in Heat Shock Protein 70 (Hsp70)

Author(s): Xiaokai Li, Hao Shao, Isabelle R. Taylor and Jason E. Gestwicki

Volume 16 , Issue 25 , 2016

Page: [2729 - 2740] Pages: 12

DOI: 10.2174/1568026616666160413140911

Price: $65

Abstract

Heat shock protein 70 (Hsp70) is a molecular chaperone that plays critical roles in protein homeostasis. Hsp70’s chaperone activity is coordinated by intra-molecular interactions between its two domains, as well as inter-molecular interactions between Hsp70 and its co-chaperones. Each of these contacts represents a potential opportunity for the development of chemical inhibitors. To illustrate this concept, we review three classes of recently identified molecules that bind distinct pockets on Hsp70. Although all three compounds share the ability to interrupt core biochemical functions of Hsp70, they stabilize different conformers. Accordingly, each compound appears to interrupt a specific subset of inter- and intra-molecular interactions. Thus, an accurate definition of an Hsp70 inhibitor may require a particularly detailed understanding of the molecule’s binding site and its effects on protein-protein interactions.

Keywords: Chaperone, Protein folding, Proteostasis, Irreversible inhibitors, Dynamics, Protein-protein interactions.

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