Patent ID: 7411039

Claim:
A peptide comprising the amino acid sequence of formula I: His-X 2 -X 3 -Gly-X 5 -Phe-X 7 -X 8 -X 9 -X 10 -X 11 -X 12 -X 13 -X 14 -X 15 -X 16 -X 17 -X 18 -Ala-Arg-X 21 -Phe-Ile-X 24 -Trp-Leu-Ile-X 28 -Thr-Arg-Ile-Thr-X 33 (formula I) wherein X 2 is Ala, Val, or Gly; X 3 is Asp or Glu; X 5 is Ser or Lys; X 7 is Ser or Lys; X 8 is Asp, Glu, or Lys; X 9 is Asp, Glu, or Lys; X 10 is Met, Lys, Leu, Ile, or Nor-Leucine; X 11 is Asn or Lys; X 12 is Thr or Lys; X 13 is Ile or Lys; X 14 is Leu or Lys; X 15 is Asp or Lys; X 16 is Asn or Lys; X 17 Leu or Lys; X 18 is Ala or Lys; X 21 is Asp or Lys; X 24 is Asn or Lys; X 28 is Gln or Lys; X 33 is Asp, Glu, or Lys and at least one of X 5 , X 7 , X 8 , X 9 , X 10 , X 11 , X 12 , X 13 , X 14 , X 15 , X 16 , X 17 , and X 18 , X 21 , X 24 , X 28 , X 33 is a Lys.