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Energy landscape in protein folding and unfolding

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9]
  1. CNR-Istituto per i Processi Chimico Fisici Messina, Messina (Italy); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Boston Univ., Boston, MA (United States); Boston University
  2. CNR-Istituto per i Processi Chimico Fisici Messina, Messina (Italy); Univ. di Messina, Messina (Italy)
  3. Consorzio per lo Sviluppo dei Sistemi a Grande Interfase, Catania (Italy)
  4. Univ. di Messina, Messina (Italy)
  5. CNR-Istituto per i Processi Chimico Fisici Messina, Messina (Italy)
  6. Univ. di Firenze and Consorzio per lo Sviluppo dei Sistemi a Grande Interfase, Florence (Italy)
  7. Yeshiva Univ., New York, NY (United States)
  8. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  9. Boston Univ., Boston, MA (United States)
Protein folding represents an open question in science, and the free-energy landscape framework is one way to describe it. In particular, the role played by water in the processes is of special interest. To clarify these issues we study, during folding–unfolding, the temperature evolution of the magnetization for hydrophilic and hydrophobic groups of hydrated lysozyme using NMR spectroscopy. Our findings confirm the validity of the theoretical scenario of a process dominated by different energetic routes, also explaining the water role in the protein configuration stability. Here, we also highlight that the protein native state limit is represented by the water singular temperature that characterizes its compressibility and expansivity and is the origin of the thermodynamical anomalies of its liquid state.
Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-90ER45429
OSTI ID:
1437126
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 12 Vol. 113; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Crystal elasto-plasticity on the Poincaré half-plane journal July 2020
Unfolding and Refolding of Protein by a Combination of Ionic and Nonionic Surfactants journal July 2018
Genuine antiplasticizing effect of water on a glass-former drug journal August 2017
Alpha-Synuclein is a Target of Fic-mediated Adenylylation/AMPylation: Implications for Parkinson's Disease journal January 2019
Glutamine Hydrolysis by Imidazole Glycerol Phosphate Synthase Displays Temperature Dependent Allosteric Activation journal February 2018
The Role of Hydrogen Bonding in the Folding/Unfolding Process of Hydrated Lysozyme: A Review of Recent NMR and FTIR Results journal November 2018
Searching the solution landscape by generalized high-index saddle dynamics text January 2020
Influence of glycerol on the cooling effect of pair hydrophobicity in water: relevance to proteins’ stabilization at low temperature journal January 2019
Quantum Approach to Fast Protein-Folding Time * journal August 2019

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