Cited by 735Heat shock proteins researchProtein Structure and DynamicsATP Synthase and ATPases Research

ATP binding and hydrolysis are essential to the function of the Hsp90 molecular chaperone in vivo

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Panaretou, Barry, Prodromou, Chrisostomos, Roe, S. Mark, O'Brien, Ronan, Ladbury, John E., Piper, Peter W., Pearl, Laurence H.·1998·The EMBO Journal

Abstract

Hsp90 is an abundant molecular chaperone essential to the establishment of many cellular regulation and signal transduction systems, but remains one of the least well described chaperones. The biochemical mechanism of protein folding by Hsp90 is poorly understood, and the direct involvement of ATP has been particularly contentious. Here we demonstrate in vitro an inherent ATPase activity in both yeast Hsp90 and the Escherichia coli homologue HtpG, which is sensitive to inhibition by the Hsp90-specific antibiotic geldanamycin. Mutations of residues implicated in ATP binding and hydrolysis by structural studies abolish this ATPase activity in vitro and disrupt Hsp90 function in vivo. These results show that Hsp90 is directly ATP dependent in vivo, and suggest an ATP-coupled chaperone cycle for Hsp90-mediated protein folding.

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Authors
Panaretou, B., Prodromou, C., Roe, S. M., O'Brien, R., Ladbury, J. E., Piper, P. W., & Pearl, L. H.
Affiliations
University College London (GB)
Corresponding author
Pearl, Laurence H.
Venue
The EMBO Journal
Published
1998-08-17
Volume
17
Issue
16
Pages
4829-4836
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2138821198
Cited by
735
References
72
Citations by year
2026: 8 · 2025: 16 · 2024: 16 · 2023: 15 · 2022: 23 · 2021: 28 · 2020: 20 · 2019: 30 · 2018: 26 · 2017: 25 · 2016: 34 · 2015: 21 · 2014: 34 · 2013: 35 · 2012: 23
FWCI
7.91
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
Keywords
HSP90, molecular chaperones, ATP binding, ATP hydrolysis, ATPase activity, geldanamycin, HtpG, protein folding, chaperone cycle, yeast, Escherichia coli
MeSH terms
Adenosine Triphosphatases, Adenosine Triphosphate, Binding Sites, Calorimetry, Hydrolysis, Models, Molecular, Protein Binding, Protein Conformation, Saccharomyces cerevisiae, Mutagenesis, Site-Directed, Protein Folding, HSP90 Heat-Shock Proteins

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