Download MendeleyCircular Permutation of a WW Domain: Folding Still Occurs after Excising the Turn of the Folding-Nucleating Hairpin.
Kier, B.L., Anderson, J.M., Andersen, N.H.(2014) J Am Chem Soc 136: 741-749
- PubMed: 24350581
- DOI: https://doi.org/10.1021/ja410824x
- Primary Citation of Related Structures:
2MDU - PubMed Abstract:
A hyperstable Pin1 WW domain has been circularly permuted via excision of the fold-nucleating turn; it still folds to form the native three-strand sheet and hydrophobic core features. Multiprobe folding dynamics studies of the normal and circularly permuted sequences, as well as their constituent hairpin fragments and comparable-length β-strand-loop-β-strand models, indicate 2-state folding for all topologies. N-terminal hairpin formation is the fold nucleating event for the wild-type sequence; the slower folding circular permutant has a more distributed folding transition state.
Organizational Affiliation:
Department of Chemistry, University of Washington , Seattle, Washington 98195, United States.
