Cited by 25Protein Structure and DynamicsProtein Interaction Studies and Fluorescence Analysisthermodynamics and calorimetric analyses

Role of Ordered Proteins in the Folding-Upon-Binding of Intrinsically Disordered Proteins

Lawrence, Chad W., Kumar, Sushant, Noid, William G., Showalter, Scott A.·2014·The Journal of Physical Chemistry Letters

Abstract

In this work, we quantitatively investigate the thermodynamic analogy between the folding of monomeric proteins and the interactions of intrinsically disordered proteins (IDPs). Motivated by the hypothesis that similar hydrophobic forces guide both globular protein folding and also IDP interactions, we present a unified experimental and computational investigation of the coupling between the folding and binding of the intrinsically disordered tail of FCP1 when interacting with the cooperatively folding winged-helix domain of Rap74. Our calorimetric measurements quantitatively demonstrate the significance of hydrophobic interactions for this binding event. Our computational studies indicate that IDPs relieve frustration at the surface of ordered proteins to generate a minimally frustrated complex that is strikingly similar to a globular monomeric protein. In summary, these results not only quantify the thermodynamic forces driving disordered protein interactions but also highlight the role of ordered proteins for IDP function.

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Crossref · 10.1021/jz402729x

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Authors
Lawrence, C. W., Kumar, S., Noid, W. G., & Showalter, S. A.
Affiliations
Pennsylvania State University (US)
Corresponding author
  • Noid, William G.
  • Showalter, Scott A.
Venue
The Journal of Physical Chemistry Letters
Published
2014-02-17
Volume
5
Issue
5
Pages
833-838
ISSN
1948-7185 (ISSN-L)
OpenAlex
W1980784169
Cited by
25
References
54
Citations by year
2025: 5 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2019: 4 · 2018: 1 · 2017: 2 · 2016: 2 · 2015: 2 · 2014: 3
FWCI
1.23
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Physical Chemistry Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (MCB-0953918)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Interaction Studies and Fluorescence Analysis
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › thermodynamics and calorimetric analyses
Keywords
intrinsically disordered proteins, hydrophobic interactions, FCP1, RAP74, winged-helix domain, calorimetry, protein folding

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