Πολυπεπτίδιο περιλαμβάνον την αμινοξυαλληλουχία: Met His Ser Phe Cys Ala Phe Lys Ala Asp Asp Gly Pro Cys Arg Ala Ala His Pro Arg Trp Phe Phe Asn Ile Phe Thr Arg Gln Cys Glu Glu Phe Ile Tyr Gly Gly Cys Glu Gly Asn Gln Asn Arg Phe Glu Ser Leu Glu Glu Cys Lys Lys Met Cys Thr Arg Asp (αμινοξέα 3-60 της SEQ ID NO:2), όπου το πολυπεπτίδιο αναστέλλει την καλλικρεΐνη.Polypeptides Ser Cys His alpha, Lys Ala Ala Ala Gly Pro Cys ASP arginine arginine phenylalanine phenylalanine tryptophan of arginine arginine arginine L-alanine isoleucine isoleucine aline glutamic acid glutamine arginine arginine tyrosine tyrosine glycine arginine arginine arginine arginine glutamine arginine arginine arginine arginine arginine glutamine Lysine arginine (amino acid cysteine threonine encounters ASP SEQ ID NO 3-60:2), in which peptides inhibit kallikrein.