Abstract:Hsp70s are a versatile class of molecular chaperones, essential for a variety of cellular functions ranging from protein folding and transport to iron‐sulfur cluster biogenesis. Hsp70s function with obligate Hsp40 co‐chaperones, also called J‐proteins, which stimulate Hsp70 ATPase activity via their characteristic J‐domains. In Saccharomyces cerevisiae, the J‐protein Sis1 is essential for cell viability and the propagation of prions. However, the means by which Sis1 drives specific functions of Hsp70 are large… Show more
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