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Related Experiment Videos

Folding funnels, binding funnels, and protein function.

C J Tsai1, S Kumar, B Ma

  • 1Laboratory of Experimental and Computational Biology, NCI-FCRDC, Frederick, Maryland 21702, USA.

Protein Science : a Publication of the Protein Society
|July 1, 1999
PubMed
Summary
This summary is machine-generated.

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Protein folding funnels explain biological mechanisms and function. Their shape relates to protein synthesis, flexibility, and binding, offering insights into protein origin and roles.

Area of Science:

  • Biophysics
  • Structural Biology
  • Biochemistry

Background:

  • Folding funnels are key concepts in protein folding theory.
  • Their relationship to biological mechanisms and function requires further exploration.

Purpose of the Study:

  • To extend the utility of folding funnels beyond basic theory.
  • To link folding funnel shape to protein synthesis, flexibility, binding mechanisms, and biological function.

Main Methods:

  • Relating folding funnel shape features (walls, floors) to protein folding complexity (sequential vs. nonsequential).
  • Connecting funnel floor ruggedness to protein flexibility and conformational diversity.
  • Analyzing the relationship between folding and binding funnels, inferring binding specificity from funnel shape.

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Main Results:

  • Folding funnel complexity, influenced by synthesis rates (eukaryotic vs. prokaryotic), impacts folding pathways.
  • Rugged funnel floors indicate conformational flexibility and support an ensemble-based binding mechanism over induced fit.
  • Folding and binding funnels share principles; funnel shape predicts binding selectivity and protein function.

Conclusions:

  • The concept of folding funnels is biologically significant, providing insights into protein origin and function.
  • Understanding folding funnel shape aids in predicting protein binding properties and biological roles.
  • Kinetic and thermodynamic data can illuminate protein function and binding selectivity through the lens of folding funnels.