Cited by 105Receptor Mechanisms and SignalingProtein Structure and DynamicsProtein Kinase Regulation and GTPase Signaling

Conformational Flexibility and Structural Dynamics in GPCR-Mediated G Protein Activation: A Perspective

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Preininger, Anita M., Meiler, Jens, Hamm, Heidi E.·2013·Journal of Molecular Biology

Abstract

Structure and dynamics of G proteins and their cognate receptors, both alone and in complex, are becoming increasingly accessible to experimental techniques. Understanding the conformational changes and timelines that govern these changes can lead to new insights into the processes of ligand binding and associated G protein activation. Experimental systems may involve the use of, or otherwise stabilize, non-native environments. This can complicate our understanding of structural and dynamic features of processes such as the ionic lock, tryptophan toggle, and G protein flexibility. While elements in the receptor's transmembrane helices and the C-terminal α5 helix of Gα undergo well-defined structural changes, regions subject to conformational flexibility may be important in fine-tuning the interactions between activated receptors and G proteins. The pairing of computational and experimental approaches will continue to provide powerful tools to probe the conformation and dynamics of receptor-mediated G protein activation.

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  1. [43]Orban T Jastrzebska B Gupta S Wang B Miyagi M Chance MR Palczewski K Conformational dynamics of activation for the pentameric complex of dimeric G protein-coupled receptor and heterotrimeric G protein Structure 2013 20 826 840 22579250 PMC3351692

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Authors
Preininger, A. M., Meiler, J., & Hamm, H. E.
Affiliations
  • Vanderbilt University Medical Center (US)
  • Vanderbilt University (US)
Corresponding author
Preininger, Anita M.
Venue
Journal of Molecular Biology
Publisher
Elsevier BV
Published
2013-07
Volume
425
Issue
13
Pages
2288-2298
ISSN
0022-2836 (ISSN-L)
OpenAlex
W2064856742
Cited by
104
References
90
Citations by year
2026: 5 · 2025: 5 · 2024: 3 · 2023: 7 · 2022: 6 · 2021: 5 · 2020: 5 · 2019: 11 · 2018: 9 · 2017: 5 · 2016: 6 · 2015: 15 · 2014: 17 · 2013: 5
FWCI
1.35
Type
journal article
Language
en
Open access
Locations
  • Journal of Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (MH090192, R01MH090192)
  • National Eye Institute (EY006062, R01EY006062)
  • National Institute of General Medical Sciences (R01GM095633, R01GM099842, R01GM080403, GM 080403, GM099842, GM095633)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK097376)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
G protein-coupled receptors, G protein activation, conformational flexibility, structural dynamics, ligand binding, ionic lock, transmembrane helices, receptor-G protein interaction
MeSH terms
Allosteric Regulation, Models, Molecular, Protein Conformation, Signal Transduction, Crystallography, X-Ray, GTP-Binding Proteins, Receptors, G-Protein-Coupled, Molecular Dynamics Simulation

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