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Oligomerization of Hsp70: Current Perspectives on Regulation and Function.


ABSTRACT: The Hsp70 molecular chaperone in conjunction with Hsp90 and a suite of helper co-chaperones are required for the folding and subsequent refolding of a large proportion of the proteome. These proteins are critical for cell viability and play major roles in diseases of proteostasis which include neurodegenerative diseases and cancer. As a consequence, a large scientific effort has gone into understanding how chaperones such as Hsp70 function at the in vitro and in vivo level. Although many chaperones require constitutive self-interaction (dimerization and oligomerization) to function, Hsp70 has been thought to exist as a monomer, especially in eukaryotic cells. Recent studies have demonstrated that both bacterial and mammalian Hsp70 can exist as a dynamic pool of monomers, dimer, and oligomers. In this mini-review, we discuss the mechanisms and roles of Hsp70 oligomerization in Hsp70 function, as well as thoughts on how this integrates into well-established ideas of Hsp70 regulation.

SUBMITTER: Takakuwa JE 

PROVIDER: S-EPMC6742908 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Oligomerization of Hsp70: Current Perspectives on Regulation and Function.

Takakuwa Jade E JE   Nitika   Knighton Laura E LE   Truman Andrew W AW  

Frontiers in molecular biosciences 20190904


The Hsp70 molecular chaperone in conjunction with Hsp90 and a suite of helper co-chaperones are required for the folding and subsequent refolding of a large proportion of the proteome. These proteins are critical for cell viability and play major roles in diseases of proteostasis which include neurodegenerative diseases and cancer. As a consequence, a large scientific effort has gone into understanding how chaperones such as Hsp70 function at the <i>in vitro</i> and <i>in vivo</i> level. Althoug  ...[more]

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