Cited by 159Protein Structure and DynamicsRNA and protein synthesis mechanismsAdvanced Physical and Chemical Molecular Interactions

Frustration, specific sequence dependence, and nonlinearity in large-amplitude fluctuations of allosteric proteins

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Li, Wenfei, Wolynes, Peter G., Takada, Shoji·2011·Proceedings of the National Academy of Sciences

Abstract

Proteins have often evolved sequences so as to acquire the ability for regulation via allosteric conformational change. Here we investigate how allosteric dynamics is designed through sequences with nonlinear interaction features. First, for 71 allosteric proteins of which two, open and closed, structures are available, a statistical survey of interactions using an all-atom model with effective solvation shows that those residue contact interactions specific to one of the two states are significantly weaker than are the contact interactions shared by the two states. This interaction feature indicates there is underlying sequence design to facilitate conformational change. Second, based on the energy landscape theory, we implement these interaction features into a new atomic-interaction-based coarse-grained model via a multiscale simulation protocol (AICG). The AICG model outperforms standard coarse-grained models for predictions of the native-state mean fluctuations and of the conformational change direction. Third, using the new model for adenylate kinase, we show that intrinsic fluctuations in one state contain rare and large-amplitude motions nearly reaching the other state. Such large-amplitude motions are realized partly by sequence specificity and partly by the nonlinear nature of contact interactions, leading to cracking. Both features enhance conformational transition rates.

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  1. [19]Case D, et al. AMBER10. San Francisco: University of California; 2008. [Google Scholar]

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Authors
Li, W., Wolynes, P. G., & Takada, S.
Affiliations
  • Kyoto University (JP)
  • University of California San Diego (US)
Venue
Proceedings of the National Academy of Sciences
Published
2011-02-09
Volume
108
Issue
9
Pages
3504-3509
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2085928981
Cited by
159
References
38
Citations by year
2026: 7 · 2025: 6 · 2024: 10 · 2023: 4 · 2022: 5 · 2021: 10 · 2020: 7 · 2019: 17 · 2018: 7 · 2017: 12 · 2016: 8 · 2015: 14 · 2014: 16 · 2013: 15 · 2012: 13
FWCI
6.76
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • American Institute for Contemporary German Studies
  • Ministry of Education, Culture, Sports, Science and Technology
  • Ministerio de Educación, Cultura y Deporte
  • Center for Theoretical Biological Physics
  • Japan Society for the Promotion of Science (22370057)
  • National Institute of General Medical Sciences (R01 GM44 557, R01GM044557)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Advanced Physical and Chemical Molecular Interactions
Keywords
allosteric proteins, allosteric conformational change, sequence design, frustration, nonlinear interactions, energy landscape theory, coarse-grained models, multiscale modeling, adenylate kinase
MeSH terms
Adenylate Kinase, Allosteric Regulation, Amino Acid Sequence, Amino Acids, Protein Conformation, Proteins, Thermodynamics, Nonlinear Dynamics, Databases, Protein, Molecular Dynamics Simulation

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