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Intrinsically disordered regions (IDRs): A vague and confusing concept for protein function.

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The term intrinsically disordered region (IDR) is confusing because it applies to many protein types and functions. Many IDRs gain structure when interacting with other molecules, making the concept unnecessary.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Protein Science

Background:

  • The term intrinsically disordered region (IDR) is widely used in scientific literature.
  • IDRs are often considered a distinct class of protein structures.
  • However, the definition and application of IDRs are inconsistent.

Purpose of the Study:

  • To critically evaluate the concept and utility of intrinsically disordered regions (IDRs) in protein science.
  • To highlight the ambiguity and limitations associated with the term IDR.
  • To advocate for a more precise and less confusing terminology in protein structure and function studies.

Main Methods:

  • Literature review and conceptual analysis.
  • Examination of diverse protein structures and functions.
  • Analysis of protein-biomolecule interactions.

Main Results:

  • Most proteins contain regions with characteristics attributed to IDRs.
  • The term IDR encompasses a wide spectrum of structural and functional properties.
  • Many purported IDRs adopt ordered structures upon binding to other molecules.

Conclusions:

  • The concept of intrinsically disordered regions (IDRs) is vague, overly broad, and often inaccurate.
  • The term IDR can be confusing and may hinder precise scientific communication.
  • A re-evaluation of protein terminology is needed to better describe structure and function.