Cited by 499Heat shock proteins researchProtein Structure and DynamicsUbiquitin and proteasome pathways

The DOI matches its Crossref record; 52 of the 52 references it cites were found in a registry or an index.

Structural and Functional Analysis of the Middle Segment of Hsp90: Implications for ATP Hydrolysis and Client Protein and Cochaperone Interactions

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Abstract

Activation of client proteins by the Hsp90 molecular chaperone is dependent on binding and hydrolysis of ATP, which drives a molecular clamp via transient dimerization of the N-terminal domains. The crystal structure of the middle segment of yeast Hsp90 reveals considerable evolutionary divergence from the equivalent regions of other GHKL protein family members such as MutL and GyrB, including an additional domain of new fold. Using the known structure of the N-terminal nucleotide binding domain, a model for the Hsp90 dimer has been constructed. From this structure, residues implicated in the ATPase-coupled conformational cycle and in interactions with client proteins and the activating cochaperone Aha1 have been identified, and their roles functionally characterized in vitro and in vivo.

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Crossref · 10.1016/s1097-2765(03)00065-0

Cites

52 of 52 references verified0 citation errors · 0 not checkable

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  • Hsp90 W320 and F349 also contact GR in the loading complex, and Hsp90 W320 is critical for client activation in vivo.

    “Notably, Hsp90W320,F349 also make contact with GR in the loading complex12 and Hsp90W320 is critical for client activation in vivo20-22.”

    From Structure of Hsp90–p23–GR reveals the Hsp90 client-remodelling mechanism (2022) · cites this paper as [20]

    The Client Protein Binding Sites section (p. 8) reports that a yeast Hsp90 Trp300Ala mutant had severe defects in growth and in vivo v-Src activation, supporting the functional point. Our copy does not identify Trp300 as W320, so it does not directly establish the claim for the specifically numbered residue. The GR-loading-complex contact is attached to a different citation in the citing sentence. (LLM, conf=0.78)

    Experimental — accuracy not yet measured
  • R32A and R380A mutations disrupt NTD-MD contacts.

    “we selected previously characterized mutants that either disrupt [R32A (34) and R380A (35)] or stabilize [A107N (26)] NTD-MD contacts.”
  • In the MD, globular proteins interact with the Src loop and the N terminus of helix Mα2.

    “In the MD, globular proteins interact with the “Src loop” (35) and the N terminus of helix Mα2.”

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Citations

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Research works printed but not linked: 1

  1. Prodromou, 1996, Expression and crystallisation of the yeast Hsp82 chaperone, and preliminary X-ray diffraction studies of the amino-terminal domain, Proteins Struct. Funct. Genet., 25, 517

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Metadata

Authors
Meyer, P., Prodromou, C., Hu, B., Vaughan, C., Roe, S. M., Panaretou, B., Piper, P. W., & Pearl, L. H.
Affiliations
  • Institute of Cancer Research (GB)
  • King's College London (GB)
  • University College London (GB)
Corresponding author
Pearl, Laurence H.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2003-03
Volume
11
Issue
3
Pages
647-658
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2108255072
Cited by
491
References
52
Citations by year
2026: 11 · 2025: 25 · 2024: 14 · 2023: 13 · 2022: 22 · 2021: 14 · 2020: 29 · 2019: 26 · 2018: 18 · 2017: 10 · 2016: 23 · 2015: 21 · 2014: 30 · 2013: 32 · 2012: 26
FWCI
10.02
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Sussex Research Online (University of Sussex) (submittedVersion, cc-by-nc)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion, cc-by-nc)
  • Research Portal (King's College London) (submittedVersion)
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 › Ubiquitin and proteasome pathways
Keywords
HSP90, ATP hydrolysis, MutL, gyrB, protein dimerization, nucleotide-binding domain, conformational cycle, molecular clamp, crystal structure, protein-protein interaction
MeSH terms
MutL Proteins, Adenosine Triphosphatases, Adenosine Triphosphate, Amino Acid Sequence, Binding Sites, Cell Division, Dose-Response Relationship, Drug, Fungal Proteins, Hydrolysis, Models, Molecular, Molecular Sequence Data, Mutation, Phenotype, Protein Binding, Protein Conformation, Structure-Activity Relationship, Temperature, Oncogene Protein pp60(v-src), Protein Structure, Tertiary, Crystallography, X-Ray, HSP90 Heat-Shock Proteins, Dimerization, DNA Gyrase, Escherichia coli Proteins

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