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Related Experiment Videos

Coupled folding and binding with alpha-helix-forming molecular recognition elements.

Christopher J Oldfield1, Yugong Cheng, Marc S Cortese

  • 1Molecular Kinetics Inc., 6201 La Pas Trail, Suite 160, Indianapolis, Indiana 46268, USA.

Biochemistry
|September 15, 2005
PubMed
Summary
This summary is machine-generated.

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Characterization of intrinsically disordered regions in proteins informed by human genetic diversity.

PLoS computational biology·2022

Researchers identified molecular recognition elements (MoREs), which are short regions that fold upon binding, mediating interactions for intrinsically disordered proteins. These alpha-helix-forming MoREs (alpha-MoREs) are crucial in protein signaling pathways.

Area of Science:

  • Biochemistry and Structural Biology
  • Computational Biology and Bioinformatics

Background:

  • Many protein interactions involve coupled folding and binding of intrinsically disordered regions.
  • These interactions are critical for cellular processes, including signaling.

Purpose of the Study:

  • To propose and identify a novel protein structural element, the molecular recognition element (MoRE).
  • To develop an algorithm for detecting alpha-helix-forming MoREs (alpha-MoREs) with high accuracy.

Main Methods:

  • Development of a discriminant function to identify regions with alpha-MoRE propensity.
  • Algorithm validation using a large dataset of structured proteins.
  • Application of the algorithm to genomic and functionally annotated protein databases.

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Main Results:

  • The algorithm accurately identifies potential alpha-MoREs with a low false-positive rate.
  • MoREs can adopt various secondary structures, including alpha-helix, beta-strand, and polyproline II helix.
  • Analysis suggests alpha-MoREs are prevalent in protein-protein interactions within signaling pathways.

Conclusions:

  • Molecular recognition elements (MoREs) represent a key structural feature mediating interactions of disordered protein regions.
  • The developed algorithm provides a reliable method for identifying alpha-MoREs.
  • Alpha-MoREs are likely significant players in the protein-protein interactions that drive cellular signaling events.