Patent ID: 8778891

Claim:
A peptide of general formula (I): R 1 -(AA) n -X 1 -Arg-X 2 -Trp-X 3 -X 4 -X 5 -X 6 (R 3 )-(AA) p -R 2 wherein, X 1 is aspartic acid or absent, X 2 is glutamine or glutamic acid, X 3 is asparagine or lysine or glutamine or absent, X 4 is phenylalanine or tyrosine or absent, X 5 is tyrosine or alanine or absent, X 6 is cysteine or absent, AA is any amino acid and n and p are integers between 0 and 2, R 1 is the primary amine function of the N-terminal amino acid, free or substituted by a group of the acyl type (R—CO—) wherein the radical R is either a saturated or unsaturated C 1 to C 30 alkyl chain of the acetyl type, or an aromatic group of the benzoyl, tosyl, or benzyloxycarbonyl type, R 2 is the hydroxyl group of the carboxyl function of the C-terminal amino acid, substituted by a group chosen from a C 1 to C 10 alkyl chain, or an NH 2 , NHY or NYY group with Y representing a C 1 to C 4 alkyl chain or one of the salts thereof, R 3 is the thiol function of cysteine in the X 6 position, wherein the thiol function is free or substituted by a methyl group or an acetyl group, or the thiol function is covalently bound by a disulfide bond to another cysteine; with the proviso that when X 1 is absent, n is 0.