Patent ID: 8124579

Claim:
A composition comprising a polypeptide consisting of an amino acid sequence according to general formula I polypeptide consisting of an amino acid sequence according to general formula I: X1-X2-X3 wherein X1 and X3 are independently absent or comprise a transduction domain, provided that at least one of X1 and X3 is a transduction domain; and wherein X2 is [Z1-Z2-RRA-Z3-AP] u , wherein Z1 is absent or is W; Z2 is absent or is L; Z3 is selected from the group consisting of S, T, Y, D, E, phosphoserine analogs and phosphotyrosine analogs; and u is 1-2, wherein when u is 2, the two copies of X2 are optionally separated by a spacer.