Cited by 72Protein Structure and DynamicsRNA and protein synthesis mechanismsAdvanced Physical and Chemical Molecular Interactions

Sequence-to-conformation relationships of disordered regions tethered to folded domains of proteins

Open access
Mittal, Anuradha, Holehouse, Alex S., Cohan, Megan C., Pappu, Rohit V.·2018·Journal of Molecular Biology

Abstract

Intrinsically disordered proteins and regions (IDPs/IDRs) are characterized by well-defined sequence-to-conformation relationships (SCRs). These relationships refer to the sequence-specific preferences for average sizes, shapes, residue-specific secondary structure propensities, and amplitudes of multiscale conformational fluctuations. SCRs are discerned from the sequence-specific conformational ensembles of IDPs. A vast majority of IDPs are actually tethered to folded domains (FDs). This raises the question of whether or not SCRs inferred for IDPs are applicable to IDRs tethered to FDs. Here, we use atomistic simulations based on a well-established forcefield paradigm and an enhanced sampling method to obtain comparative assessments of SCRs for 13 archetypal IDRs modeled as autonomous units, as C-terminal tails connected to FDs, and as linkers between pairs of FDs. Our studies uncover a set of general observations regarding context-independent versus context-dependent SCRs of IDRs. SCRs are minimally perturbed upon tethering to FDs if the IDRs are deficient in charged residues and for polyampholytic IDRs where the oppositely charged residues within the sequence of the IDR are separated into distinct blocks. In contrast, the interplay between IDRs and tethered FDs has a significant modulatory effect on SCRs if the IDRs have intermediate fractions of charged residues or if they have sequence-intrinsic conformational preferences for canonical random coils. Our findings suggest that IDRs with context-independent SCRs might be independent evolutionary modules, whereas IDRs with context-dependent SCRs might co-evolve with the FDs to which they are tethered.

Integrity signals

Registry

Crossref · 10.1016/j.jmb.2018.05.012

Cites

92 of 92 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Although there are clear context dependent modulations of intrinsic sequence-ensemble relationships, these modulations range from being negligible to predictable based on the sequence features of IDRs and the types of folded domains to which IDRs are tethered.

    “Although there are clear context dependent modulations of intrinsic sequence-ensemble relationships, these modulations range from being negligible to predictable based on the sequence features of IDRs and the types of folded domains to which IDRs are tethered.80,81”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Mittal, A., Holehouse, A. S., Cohan, M. C., & Pappu, R. V.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Pappu, Rohit V.
Venue
Journal of Molecular Biology
Publisher
Elsevier BV
Published
2018-08
Volume
430
Issue
16
Pages
2403-2421
ISSN
0022-2836 (ISSN-L)
OpenAlex
W2801285438
Cited by
72
References
92
Citations by year
2026: 6 · 2025: 5 · 2024: 10 · 2023: 8 · 2022: 9 · 2021: 12 · 2020: 9 · 2019: 10 · 2018: 3
FWCI
3.01
Type
journal article
Language
en
Open access
Locations
  • Journal of Molecular Biology (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
National Science Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Advanced Physical and Chemical Molecular Interactions
Keywords
intrinsically disordered regions, charged residues, random coil, protein conformational ensembles, protein evolution, C-terminal tail, protein linkers
MeSH terms
Protein Domains, Amino Acid Sequence, Animals, Humans, Models, Molecular, Protein Structure, Secondary, Protein Folding, Intrinsically Disordered Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review