Patent ID: 7374875

Claim:
A peptide comprising the following sequence: TPA-Asn-Leu-(Ala or Gln or His)-(Arg or Phe)-Cys-Xaa c -Xaa d -Arg-Cys-(His or Lys)-Ser-Leu-Gly-Xaa h -(Leu or Lys)-Gly-Lys-Cys-(Ala or Gln)-(Gly or (D)Asp or Ser)-(Ser or His or Asn)-Xaa j -Cys-(Thr or Ala)-Cys-Xaa k -NH 2 (SEQ ID NO: 20) wherein TPA is thiopropionic acid; Xaa c is an amino acid selected from the group consisting of Gln and Val; Xaa d is an amino acid selected from the group consisting of Gln and Leu; Xaa h is an amino acid selected from the group consisting of Leu and Lys; Xaa j is selected from the group consisting of β-naphthylalanine, phenylalanine, and diphenylalanine; and Xaa k is an amino acid selected from the group consisting of Gly, IIe, and Val, wherein said Xaa k amino acid is optionally linked to a Pro amino acid.