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Nature Cell Biology  3, E51 - E53 (2001)
doi:10.1038/35055162

Molecular chaperones and the art of recognizing a lost cause

Amie J. McClellan & Judith Frydman

Amie J. McClellan and Judith Frydman are in the Department of Biological Sciences, Stanford University, Stanford, California 94305-5020, USA
jfrydman@leland.stanford.edu

Molecular chaperones have long been heralded as machines for folding and salvaging proteins. However, not every attempt to fold or refold a protein can be successful. Chaperones are known to participate in the degradation of misfolded polypeptides, but a direct link between folding and degradation pathways has remained elusive. Two recent reports show that the co-chaperone CHIP mediates ubiquitin-dependent degradation of substrates bound to heat-shock protein 70 (Hsp70) and/or Hsp90.

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Nature Cell Biology
ISSN: 1465-7392
EISSN: 1476-4679
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