All in the family: atypical Hsp70 chaperones are conserved modulators of Hsp70 activity

被引：76

作者：

Shaner, Lance ^{[1
]}

Morano, Kevin A. ^{[1
]}

机构：

[1] Univ Texas, Sch Med, Dept Microbiol & Mol Genet, Houston, TX 77030 USA

来源：

CELL STRESS & CHAPERONES | 2007年 / 12卷 / 01期

关键词：

D O I：

10.1379/CSC-245R.1

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Divergent relatives of the Hsp70 protein chaperone such as the Hsp110 and Grp170 families have been recognized for some time, yet their biochemical roles remained elusive. Recent work has revealed that these "atypical" Hsp70s exist in stable complexes with classic Hsp70s where they exert a powerful nucleotide-exchange activity that synergizes with Hsp40/DnaJ-type cochaperones to dramatically accelerate Hsp70 nucleotide cycling. This represents a novel evolutionary transition from an independent protein-folding chaperone to what appears to be a dedicated cochaperone. Contributions of the atypical Hsp70s to established cellular roles for Hsp70 now must be deciphered.

引用

页码：1 / 8

页数：8

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