Cited by 37Protein Structure and DynamicsAdvanced Physical and Chemical Molecular InteractionsRNA and protein synthesis mechanisms

Conformational Preferences of an Intrinsically Disordered Protein Domain: A Case Study for Modern Force Fields

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Gopal, Srinivasa M., Wingbermühle, Sebastian, Schnatwinkel, Jan, Juber, Selina, Herrmann, Christian, Schäfer, Lars V.·2021·The Journal of Physical Chemistry B

Abstract

, ff99SB*-ILDNP with TIP3P and TIP4P-D, and FB15 with TIP3P-FB water. Comparing the results from REST2-enhanced sampling simulations with experimental CD spectra and secondary chemical shifts reveals that the ff99SB-disp force field can realistically capture the broad and mildly helical structural ensemble of free c-Myb. The structural ensembles yielded by CHARMM36m, ff99SB*-ILDNP together with TIP4P-D water, and FB15 are also mildly helical; however, each of these force fields can be assigned a specific subset of c-Myb residues for which the simulations could not reproduce the experimental secondary chemical shifts. In addition, microsecond-timescale MD simulations of the KIX/c-Myb complex show that most force fields used preserve a stable helix fold of c-Myb in the complex. Still, all force fields predict a KIX/c-Myb complex interface that differs slightly from the structures provided by NMR because several NOE-derived distances between KIX and c-Myb were exceeded in the simulations. Taken together, the ff99SB-disp force field in the first place but also CHARMM36m, ff99SB*-ILDNP together with TIP4P-D water, and FB15 can be suitable choices for future simulation studies of the coupled folding and binding mechanism of the KIX/c-Myb complex and potentially also other IDPs.

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Crossref · 10.1021/acs.jpcb.0c08702

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  • Disordered proteins and regions are characterized by broad and heterogeneous ensembles with small differences in relative conformational stabilities and low barriers.

    “Disordered proteins (regions) are characterized by broad and heterogeneous ensembles where the differences in the relative conformational stabilities are small, or even minor and the barriers are low.”

    From AlphaFold, Artificial Intelligence (AI), and Allostery (2022) · cites this paper as [128]

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Authors
Gopal, S. M., Wingbermühle, S., Schnatwinkel, J., Juber, S., Herrmann, C., & Schäfer, L. V.
Affiliations
Ruhr University Bochum (DE)
Corresponding author
Schäfer, Lars V.
Venue
The Journal of Physical Chemistry B
Published
2020-12-31
Volume
125
Issue
1
Pages
24-35
ISSN
  • 1520-5207 (ISSN-L)
  • 1520-6106
OpenAlex
W3116254766
Cited by
37
References
81
Citations by year
2026: 6 · 2025: 2 · 2024: 6 · 2023: 6 · 2022: 8 · 2021: 9
FWCI
1.86
Type
journal article
Language
en
Open access
Locations
  • The Journal of Physical Chemistry B (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (331085229, EXC 2033 -- 390677874 -- RESOLV, GRK2376)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Advanced Physical and Chemical Molecular Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
intrinsically disordered proteins, MYB, KIX domain, force field comparison, CHARMM36m, water model, conformational ensembles, coupled folding and binding, protein-protein complex
MeSH terms
Computer Simulation, Molecular Conformation, Magnetic Resonance Spectroscopy, Protein Conformation, Water, Molecular Dynamics Simulation, Intrinsically Disordered Proteins

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