Cited by 29Protein Structure and DynamicsAdvanced NMR Techniques and ApplicationsAdvanced Physical and Chemical Molecular Interactions

NMR Relaxation in Proteins with Fast Internal Motions and Slow Conformational Exchange: Model-Free Framework and Markov State Simulations

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Xia, Junchao, Deng, Nan-jie, Levy, Ronald M.·2013·The Journal of Physical Chemistry B

Abstract

Calculating NMR relaxation effects for proteins with dynamics on multiple time scales generally requires very long trajectories based on conventional molecular dynamics simulations. In this report, we have built Markov state models from multiple MD trajectories and used the resulting MSM to capture the very fast internal motions of the protein within a free energy basin on a time scale up to hundreds of picoseconds and the more than 3 orders of magnitude slower conformational exchange between macrostates. To interpret the relaxation data, we derive new equations using the model-free framework which includes two slowly exchanging macrostates, each of which also exhibits fast local motions. Using simulations of HIV-1 protease as an example, we show how the populations of slowly exchanging conformational states as well as order parameters for the different states can be determined from the NMR relaxation data.

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  • Computation of NMR relaxation and order parameters from MSMs can be made straightforward through the use of the model-free framework approach of Lipari and Szabo, as demonstrated for HIV-1 protease.

    “their computation from MSMs can be made straightforward through the use of the model-free framework approach of Lipari and Szabo, as recently demonstrated for HIV-1 protease [69].”

    From Markov state models of biomolecular conformational dynamics (2014) · cites this paper as [69]

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Authors
Xia, J., Deng, N.-J., & Levy, R. M.
Affiliations
  • Rutgers, The State University of New Jersey (US)
  • Department of Chemistry and Chemical Biology and BioMaPS Institute for Quantitative Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, United States
Corresponding author
Levy, Ronald M.
Venue
The Journal of Physical Chemistry B
Published
2013-05-28
Volume
117
Issue
22
Pages
6625-6634
ISSN
  • 1520-5207 (ISSN-L)
  • 1520-6106
OpenAlex
W1981737350
Cited by
29
References
93
Citations by year
2025: 1 · 2022: 3 · 2021: 1 · 2020: 2 · 2018: 3 · 2016: 3 · 2015: 7 · 2014: 8
FWCI
2.69
Type
journal article
Language
en
Open access
Locations
  • The Journal of Physical Chemistry B (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (1s10rr027444-01)
  • National Institute of General Medical Sciences (R01GM030580, GM30580)
  • National Center for Research Resources (S10-RR027444, S10RR022375)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced NMR Techniques and Applications
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Advanced Physical and Chemical Molecular Interactions
Keywords
NMR relaxation, protein internal motions, conformational exchange, Markov state models, model-independent analysis, HIV-1 protease, order parameter, multiple time scales, free energy landscape
MeSH terms
Humans, Kinetics, Markov Chains, Magnetic Resonance Spectroscopy, HIV-1, HIV Protease, Molecular Dynamics Simulation

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