Cited by 349Protein Structure and DynamicsMachine Learning in BioinformaticsGenomics and Chromatin Dynamics

The structural and functional signatures of proteins that undergo multiple events of post‐translational modification

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Pejaver, Vikas, Hsu, Wei‐Lun, Xin, Fuxiao, Dunker, A. Keith, Uversky, Vladimir N., Radivojac, Predrag·2014·Protein Science

Abstract

The structural, functional, and mechanistic characterization of several types of post‐translational modifications (PTMs) is well‐documented. PTMs, however, may interact or interfere with one another when regulating protein function. Yet, characterization of the structural and functional signatures of their crosstalk has been hindered by the scarcity of data. To this end, we developed a unified sequence‐based predictor of 23 types of PTM sites that, we believe, is a useful tool in guiding biological experiments and data interpretation. We then used experimentally determined and predicted PTM sites to investigate two particular cases of potential PTM crosstalk in eukaryotes. First, we identified proteins statistically enriched in multiple types of PTM sites and found that they show preferences toward intrinsically disordered regions as well as functional roles in transcriptional, posttranscriptional, and developmental processes. Second, we observed that target sites modified by more than one type of PTM, referred to as shared PTM sites, show even stronger preferences toward disordered regions than their single‐PTM counterparts; we explain this by the need for these regions to accommodate multiple partners. Finally, we investigated the influence of single and shared PTMs on differential regulation of protein–protein interactions. We provide evidence that molecular recognition features (MoRFs) show significant preferences for PTM sites, particularly shared PTM sites, implicating PTMs in the modulation of this specific type of macromolecular recognition. We conclude that intrinsic disorder is a strong structural prerequisite for complex PTM‐based regulation, particularly in context‐dependent protein–protein interactions related to transcriptional and developmental processes. Availability: www.modpred.org

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Crossref · 10.1002/pro.2494

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Authors
Pejaver, V., Hsu, W., Xin, F., Dunker, A. K., Uversky, V. N., & Radivojac, P.
Affiliations
  • Indiana University Bloomington (US)
  • Indiana University Indianapolis (US)
  • General Electric (United States) (US)
  • Russian Academy of Sciences (RU)
  • Department of Computer Science and Informatics Indiana University Bloomington Indiana 47405
Venue
Protein Science
Publisher
Wiley
Published
2014-06-11
Volume
23
Issue
8
Pages
1077-1093
ISSN
  • 0961-8368 (ISSN-L)
  • 1469-896X
OpenAlex
W2124052876
Cited by
349
References
98
Citations by year
2026: 10 · 2025: 18 · 2024: 24 · 2023: 20 · 2022: 35 · 2021: 43 · 2020: 35 · 2019: 34 · 2018: 34 · 2017: 32 · 2016: 37 · 2015: 21 · 2014: 5
FWCI
12.98
Type
journal article
Language
en
Open access
Locations
  • Protein Science (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Commons - University of South Florida (University of South Florida) (submittedVersion)
  • IUScholarWorks (Indiana University) (submittedVersion)
  • PMC
Funders
National Science Foundation (DBI-0644017)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Machine Learning in Bioinformatics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
post-translational modification, PTM crosstalk, PTM site prediction, intrinsically disordered regions, molecular recognition features, protein-protein interaction, transcriptional regulation, developmental processes, eukaryotic proteins
MeSH terms
Models, Molecular, Protein Conformation, Protein Processing, Post-Translational, Proteins

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