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Quinary interactions with an unfolded state ensemble.

Rachel D Cohen1, Gary J Pielak1,2,3,4

  • 1Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina, 27599.

Protein Science : a Publication of the Protein Society
|June 2, 2017
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Summary
This summary is machine-generated.

The cellular environment can alter protein stability by remodeling the unfolded state ensemble, not just the folded state. This finding expands our understanding of protein thermodynamics within cells.

Keywords:
NMRamide proton exchangefoldingquinary structurestabilitythermodynamicsunfolded ensemble

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Area of Science:

  • Biochemistry
  • Protein Folding
  • Thermodynamics

Background:

  • Anfinsen's thermodynamic hypothesis posits proteins fold into their lowest Gibbs free energy state.
  • Protein stability is influenced by denaturation free energy changes.
  • Quinary interactions, transient cellular contacts, affect the folded state's stability.

Purpose of the Study:

  • To investigate the impact of the cellular environment on the unfolded state ensemble of proteins.
  • To expand the understanding of factors modulating protein stability beyond the folded state.

Main Methods:

  • The study focused on analyzing the cellular environment's effect on protein unfolding.
  • Investigated the remodeling of the unfolded state ensemble.

Main Results:

  • Demonstrated that the cellular environment can remodel the unfolded state ensemble.
  • Showed that cellular factors influence protein stability by affecting the unfolded state.

Conclusions:

  • The cellular environment plays a crucial role in protein stability by influencing both folded and unfolded states.
  • Findings challenge a sole focus on the folded state and quinary interactions for stability modulation.