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Intrinsically Disordered Proteins02:18

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Author Spotlight: Exploring Intrinsically Disordered Protein Dynamics Through NMR Relaxation Experiments
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Deep structural insights into RNA-binding disordered protein regions.

András Zeke1, Éva Schád1, Tamás Horváth1

  • 1Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary.

Wiley Interdisciplinary Reviews. RNA
|January 31, 2022
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Summary

Intrinsically disordered protein regions (IDRs) bind RNA through two main modes, differing in strategy and function. This study classifies these RNA-binding IDRs and explores their interactions, revealing broader substrate acceptance.

Keywords:
IDP-RNA complexRNA recognitionRNA structureintrinsically disordered proteinprotein-RNA binding

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Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Many proteins bind RNA without canonical RNA recognition domains.
  • Intrinsically disordered protein regions (IDRs) are increasingly identified as RNA-binding motifs.
  • Structural mechanisms of RNA recognition by IDRs remain largely unexplored.

Purpose of the Study:

  • To summarize structural knowledge of RNA binding by IDRs.
  • To propose a classification system for RNA-binding IDRs based on sequence and structure.
  • To compare RNA-binding IDRs with DNA-binding disordered proteins and small molecule-RNA interactions.

Main Methods:

  • Detailed structural analysis of protein-RNA complexes containing IDRs.
  • Integration of molecular dynamics simulations to support structural findings.
  • Comparative analysis of RNA-binding IDRs, DNA-binding disordered proteins, and small molecule-RNA interactions.

Main Results:

  • Identified two major binding modes for RNA-binding IDRs, suggesting distinct recognition strategies and functions.
  • Found differences and similarities between RNA- and DNA-binding disordered proteins, indicating potential for broader substrate binding.
  • Molecular dynamics simulations corroborated proposed structural preferences of RNA-binding IDRs.

Conclusions:

  • A classification system for RNA-binding IDRs can be based on their sequential and structural properties.
  • Disordered protein regions exhibit diverse strategies for RNA recognition.
  • Understanding these interactions is crucial for deciphering RNA-protein and small molecule-RNA interactions.