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  • Title: Folding of barstar C40A/C82A/P27A and catalysis of the peptidyl-prolyl cis/trans isomerization by human cytosolic cyclophilin (Cyp18).
    Author: Golbik R, Fischer G, Fersht AR.
    Journal: Protein Sci; 1999 Jul; 8(7):1505-14. PubMed ID: 10422840.
    Abstract:
    Refolding of b*C40A/C82A/P27A is comprised of several kinetically detectable folding phases. The slowest phase in refolding originates from trans-->cis isomerization of the Tyr47-Pro48 peptide bond being in cis conformation in the native state. This refolding phase can be accelerated by the peptidyl-prolyl cis/trans isomerase human cytosolic cyclophilin (Cyp18) with a kcat/K(M) of 254,000 M(-1) s(-1). The fast refolding phase is not influenced by the enzyme.
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