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Related Experiment Videos

Folding nuclei in proteins.

O V Galzitskaya1, D N Ivankov, A V Finkelstein

  • 1Institute of Protein Research, Russian Academy of Sciences, 142290, Moscow Region, Pushchino, Russia.

FEBS Letters
|February 13, 2001
PubMed
Summary
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Current protein & peptide science·2022

Protein folding involves many intermediate states, but only a few are experimentally observable. This review focuses on the

Area of Science:

  • Biochemistry
  • Physical Chemistry
  • Molecular Biology

Background:

  • Protein folding and unfolding involve transient, half-folded microstates.
  • Experimentally observable intermediates typically form far from thermodynamic equilibrium.
  • Universal folding features are observed near equilibrium, often without stable intermediates.

Purpose of the Study:

  • To review recent experimental and theoretical investigations of protein folding nuclei.
  • To elucidate the role of the transition state in protein folding kinetics.

Main Methods:

  • Literature review of experimental studies on protein folding.
  • Analysis of theoretical models and simulations of protein folding dynamics.
  • Examination of kinetic data related to folding and unfolding transitions.

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Main Results:

  • The transition state, or 'folding nucleus,' is crucial for understanding folding-unfolding kinetics.
  • Two-state transitions near equilibrium proceed without significant accumulation of metastable intermediates.
  • The folding nucleus dictates the rate of the folding process.

Conclusions:

  • Folding nuclei are key determinants of protein folding rates.
  • Understanding folding nuclei provides insights into the fundamental mechanisms of protein dynamics.
  • Further research on folding nuclei is essential for deciphering protein behavior.