Patent ID: 7022675

Claim:
A polypeptide comprising at least five contiguous amino acids of a general formula selected from the group consisting of R1-Arg-norLeu-R3-R4-His-Pro-R5, R1-Arg-R2-homoSer-R4-His-Pro-R5, and R1-Arg-R2-R3-norLeu-His-Pro-R5; wherein R1 is H or Asp; R2 is selected from the group consisting of Val and norLeu; R3 is selected from the group consisting of Tyr, Tyr(PO3)2, and homoSer; R4 is selected from the group consisting of Ile and norLeu; and R5 is selected from the group consisting of H, Phe, and Ile; wherein when the general formula is R1-Arg-norLeu-R3-R4-His-Pro-R5 at least one of the following is true: R3 is homoSer; R4 is norLeu; or R5 is selected from the group consisting of H and Ile; and wherein the general formula is R1-Arg- R2-R3-norLeu-His-Pro-R5, R5 is selected from the group consisting of H and Ile.