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Protein & Peptide Letters


ISSN (Print): 0929-8665
ISSN (Online): 1875-5305

Heat Shock Protein 40: Structural Studies and Their Functional Implications

Author(s): Jingzhi Li, Xinguo Qian and Bingdong Sha

Volume 16, Issue 6, 2009

Page: [606 - 612] Pages: 7

DOI: 10.2174/092986609788490159

Price: $65


The mechanism by which Hsp40 and other molecular chaperones recognize and interact with non-native polypeptides is a fundamental question, as is how Hsp40 co-operates with Hsp70 to facilitate protein folding. Years of structural studies of Hsp40 from yeast and other species, conducted using X-ray protein crystallography, NMR and small-angle X-ray scattering, have shed light on the mechanisms how Hsp40 functions as a molecular chaperone and how Hsp40- Hsp70 pair promotes protein folding, protein transport and degradation. This review provides a discussion of recent structural studies of Hsp40s and their functional implications.

Keywords: Molecular chaperone, Hsp40, Hsp70, J-domain, peptide-binding fragment, protein structure, Sis1, Ydj1

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