Related resources
Full-text held externally
- PMID: 21539796
- UKPMCID: 21539796
- DOI: 10.1016/j.bpj.2011.03.024
Search for item elsewhere
University researcher(s)
Academic department(s)
Modulation of contact order effects in the two-state folding of stefins A and B.
Jelinska, Clare; Davis, Peter J; Kenig, Manca; Zerovnik, Eva; Kokalj, Saša Jenko; Gunčar, Gregor; Turk, Dušan; Turk, Vito; Clarke, David T; Waltho, Jonathan P; Staniforth, Rosemary A
Biophysical journal. 2011;100(9):2268-74.
Access to files
Full-text and supplementary files are not available from Manchester eScholar. Full-text is available externally using the following links:
Full-text held externally
- PMID: 21539796
- UKPMCID: 21539796
- DOI: 10.1016/j.bpj.2011.03.024
Abstract
It is well established that contact order and folding rates are correlated for small proteins. The folding rates of stefins A and B differ by nearly two orders of magnitude despite sharing an identical native fold and hence contact order. We break down the determinants of this behavior and demonstrate that the modulation of contact order effects can be accounted for by the combined contributions of a framework-like mechanism, characterized by intrinsic helix stabilities, together with nonnative helical backbone conformation and nonnative hydrophobic interactions within the folding transition state. These contributions result in the formation of nonnative interactions in the transition state as evidenced by the opposing effects on folding rate and stability of these proteins.