The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Allosteric mechanisms can be distinguished using structural mass spectrometry
Open accessAbstract
The activity of many proteins, including metabolic enzymes, molecular machines, and ion channels, is often regulated by conformational changes that are induced or stabilized by ligand binding. In cases of multimeric proteins, such allosteric regulation has often been described by the concerted Monod-Wyman-Changeux and sequential Koshland-Némethy-Filmer classic models of cooperativity. Despite the important functional implications of the mechanism of cooperativity, it has been impossible in many cases to distinguish between these various allosteric models using ensemble measurements of ligand binding in bulk protein solutions. Here, we demonstrate that structural MS offers a way to break this impasse by providing the full distribution of ligand-bound states of a protein complex. Given this distribution, it is possible to determine all the binding constants of a ligand to a highly multimeric cooperative system, and thereby infer its allosteric mechanism. Our approach to the dissection of allosteric mechanisms relies on advances in MS--which provide the required resolution of ligand-bound states--and in data analysis. We validated our approach using the well-characterized Escherichia coli chaperone GroEL, a double-heptameric ring containing 14 ATP binding sites, which has become a paradigm for molecular machines. The values of the 14 binding constants of ATP to GroEL were determined, and the ATP-loading pathway of the chaperone was characterized. The methodology and analyses presented here are directly applicable to numerous other cooperative systems and are therefore expected to promote further research on allosteric systems.
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“Results showed that the ATP-promoted allosteric transitions of the homo-heptameric rings of GroEL are concerted (Dyachenko et al., 2013).”
From Allostery in Its Many Disguises: From Theory to Applications (2019) · cites this paper as Dyachenko et al., 2013
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Allostery in Its Many Disguises: From Theory to Applications
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Metadata
- Authors
- Dyachenko, A., Gruber, R., Shimon, L., Horovitz, A., & Sharon, M.
- Affiliations
- Weizmann Institute of Science (IL)
- Departments of aBiological Chemistry and
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2013-04-15
- Volume
- 110
- Issue
- 18
- Pages
- 7235-7239
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC3645570
- OpenAlex
- W2092848900
- Cited by
- 144
- References
- 29
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 5 · 2023: 3 · 2022: 10 · 2021: 12 · 2020: 11 · 2019: 10 · 2018: 17 · 2017: 10 · 2016: 17 · 2015: 14 · 2014: 13 · 2013: 12
- FWCI
- 8.37
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
- Keywords
- allosteric regulation, structural mass spectrometry, ligand binding cooperativity, Monod-Wyman-Changeux model, multimeric proteins, ATP binding, GroEL, molecular chaperones, molecular machines
- MeSH terms
- Adenosine Triphosphate, Allosteric Regulation, Escherichia coli, Protein Binding, Mass Spectrometry, Chaperonin 60
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