Cited by 129Heat shock proteins researchProtein Structure and DynamicsCancer-related Molecular Pathways

The client protein p53 adopts a molten globule–like state in the presence of Hsp90

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Park, Sung Jean, Borin, Brendan N, Martinez-Yamout, Maria A, Dyson, H Jane·2011·Nature Structural & Molecular Biology

Abstract

It is not currently known in what state (folded, unfolded or alternatively folded) client proteins interact with the chaperone Hsp90. We show that one client, the p53 DNA-binding domain, undergoes a structural change in the presence of Hsp90 to adopt a molten globule-like state. Addition of one- and two-domain constructs of Hsp90, as well as the full-length three-domain protein, to isotopically labeled p53 led to reduction in NMR signal intensity throughout p53, particularly in its central β-sheet. This reduction seems to be associated with a change of structure of p53 without formation of a distinct complex with Hsp90. Fluorescence and hydrogen-exchange measurements support a loosening of the structure of p53 in the presence of Hsp90 and its domains. We propose that Hsp90 interacts with p53 by multiple transient interactions, forming a dynamic heterogeneous manifold of conformational states that resembles a molten globule.

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Authors
Park, S. J., Borin, B. N., Martinez-Yamout, M. A., & Dyson, H. J.
Affiliations
Scripps Research Institute (US)
Corresponding author
Dyson, H Jane
Venue
Nature Structural & Molecular Biology
Published
2011-04-03
Volume
18
Issue
5
Pages
537-541
ISSN
  • 1545-9985 (ISSN-L)
  • 1545-9993
OpenAlex
W2074979923
Cited by
128
References
34
Citations by year
2026: 3 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 8 · 2021: 9 · 2020: 9 · 2019: 10 · 2018: 13 · 2017: 6 · 2016: 12 · 2015: 6 · 2014: 13 · 2013: 18 · 2012: 7
FWCI
5.97
Type
journal article
Language
en
Open access
Locations
  • Nature Structural & Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of General Medical Sciences (GM57374, R01GM057374)
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
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
p53, HSP90, molten globule, protein conformation, DNA-binding domain, molecular chaperones, client proteins, transient interactions, conformational heterogeneity, protein folding, tumor suppressor
MeSH terms
Amino Acid Sequence, Binding Sites, Humans, Models, Molecular, Spectrometry, Fluorescence, Tumor Suppressor Protein p53, Protein Structure, Tertiary, Protein Folding, HSP90 Heat-Shock Proteins, Nuclear Magnetic Resonance, Biomolecular

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