| abstract |
Fusion polypeptides according to formula I are reported herein: NH 2 -S 2 -X 1 -S 1 -COOH (Formula I) [Wherein, X 1 comprises a random amino acid sequence or an amino acid sequence derived from a first polypeptide, S 2 and S 1 are non-overlapping amino acid sequences derived from a second polypeptide, and -Represents a peptide bond, Wherein the second polypeptide is a polypeptide having peptidyl-prolyl cis / trans-isomerase activity (PPIase activity) or is derived from the FKBP-folding domain family, X 1 is inserted in place of the insert-in-flap-domain of the second polypeptide. |