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The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

A theoretical search for folding/unfolding nuclei in three-dimensional protein structures

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Galzitskaya, Oxana V., Finkelstein, Alexei V.·1999·Proceedings of the National Academy of Sciences

Abstract

When a protein folds or unfolds, it has to pass through many half-folded microstates. Only a few of them can be seen experimentally. In a two-state transition proceeding with no accumulation of metastable intermediates [Fersht, A. R. (1995)Curr. Opin. Struct. Biol.5, 79–84], only the semifolded microstates corresponding to the transition state can be outlined; they influence the folding/unfolding kinetics. Our aim is to calculate them, provided the three-dimensional protein structure is given. The presented approach follows from the capillarity theory of protein folding and unfolding [Wolynes, P. G. (1997)Proc. Natl. Acad. Sci. USA 94, 6170–6175]. The approach is based on a search for free-energy saddle point(s) on a network of protein unfolding pathways. Under some approximations, this search is rapidly performed by dynamic programming and, despite its relative simplicity, gives a good correlation with experiment. The computed folding nuclei look like ensembles of those compact and closely packed parts of the three-dimensional native folds that contain a small number of disordered protruding loops. Their estimated free energy is consistent with the rapid (within seconds) folding and unfolding of small proteins at the point of thermodynamic equilibrium between the native fold and the coil.

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Metadata

Authors
Galzitskaya, O. V., & Finkelstein, A. V.
Venue
Proceedings of the National Academy of Sciences
Published
1999-09-28
Volume
96
Issue
20
Pages
11299-11304
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2112032866
Cited by
313
References
47
FWCI
10.33
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A theoretical search for folding/unfolding nuclei in three-dimensional protein structures. https://app.cochat.ai/papers/10.1073/pnas.96.20.11299
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Galzitskaya, O. V., & Finkelstein, A. V. (1999). A theoretical search for folding/unfolding nuclei in three-dimensional protein structures. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.96.20.11299

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