PreprintCited by 6Protein Structure and DynamicsAdvanced NMR Techniques and ApplicationsReceptor Mechanisms and Signaling

Accurate Protein Dynamic Conformational Ensembles: Combining AlphaFold, MD and Amide 15 N( 1 H) NMR Relaxation

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Lesovoy, Dmitry, Roshchin, Konstantin, Sala, Benedetta Maria, Sandalova, Tatyana, Achour, Adnane, Agback, Tatiana, Orekhov, Vladislav, Agback, Peter·2025·International Journal of Molecular Sciences

Preprint — published as 10.3390/ijms26188917 · Paper page

Abstract

Conformational heterogeneity is critical for protein function, but the validation of dynamic ensembles remains a challenge. In this study, we introduced an approach that integrates free MD simulations, using an AlphaFold-generated structure as the starting point, with experimental relaxation data to identify biologically relevant conformational ensembles. For the extracellular region of Streptococcus pneumoniae Psr Sp , we found that only certain segments of the MD long trajectory aligned well with experimental data. The defined ensembles revealed two regions with increased flexibility that play important functional roles.

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Authors
Lesovoy, D., Roshchin, K., Sala, B. M., Sandalova, T., Achour, A., Agback, T., Orekhov, V., & Agback, P.
Affiliations
  • Institute of Bioorganic Chemistry (RU)
  • Karolinska University Hospital (SE)
  • Swedish University of Agricultural Sciences (SE)
Corresponding author
  • Orekhov, Vladislav
  • Agback, Peter
Venue
International Journal of Molecular Sciences
Publisher
openRxiv
Published
2025-02-07
Volume
26
Issue
18
Pages
8917-8917
ISSN
1422-0067 (ISSN-L)
OpenAlex
W4414253118
Cited by
6
References
123
Citations by year
2026: 4 · 2025: 2
FWCI
1.80
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • Epsilon Open Archive (Sveriges lantbruksuniversitet biblioteket (Swedish University of Agricultural Sciences)) (acceptedVersion)
Funders
  • RSF Social Finance (21 1605 Pj 01 H, 2018-02874, ITM17-0218, 2023-03485, RSF 24-13-00413, 2024-06251, 10399, 2021-05061)
  • Stiftelsen för Strategisk Forskning (ITM17-0218, ITM17)
  • Cancerfonden (2023-03485, 10399, 21 1605 Pj 01H, RSF 24-13-00413, 2024-06251, 2021-05061, ITM17-0218, 21 1605 Pj, 2018-02874)
  • Vetenskapsrådet (21 1605 Pj 01 H, 2023-03485, 2021-05061, RSF 24-13-00413, Swedish Research Council № 2021-05061, 10399, 2018-, 2024-06251, 2018-02874, ITM17-0218)
  • Russian Science Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced NMR Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
Keywords
protein conformational ensembles, conformational heterogeneity, AlphaFold, extracellular proteins, protein flexibility
MeSH terms
Amides, Bacterial Proteins, Nitrogen Isotopes, Magnetic Resonance Spectroscopy, Protein Conformation, Streptococcus pneumoniae, Nuclear Magnetic Resonance, Biomolecular, Molecular Dynamics Simulation

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