Patent ID: 7273846

Claim:
A peptide consisting of the structure: wherein X 6 is selected from the group consisting of: D-arginine, D-alanine, D-norleucine, D-α-aminobutyric acid, D-valine, D-leucine, D-isoleucine, D-proline, D-methionine, D-phenylalanine, D-asparagine, D-glutamine, D-serine, D-threonine, D-glutamic acid, D-aspartic acid, D-lysine, D-histidine, D-tryptophan, D-tyrosine, D-cyclohexylalanine, D-(2′)naphthylalanine, D-ornithine, D-homoarginine, D-nitroarginine, D-norarginine and D-citrulline, X 7 is cysteine, X 8 is either methionine, norleucine, or N-methyl norleucine, X 9 is leucine, X 10 is either asparagine, glutamine, leucine, isoleucine, valine, norleucine, cyclohexylalanine, phenylalanine, (2′)-naphthylalanine, tyrosine, histidine, tryptophan, lysine, serine, threonine, methionine, or citrulline, X 11 is arginine, X 12 is valine, X 13 is phenylalanine, (2′)napthylalanine, p-fluoro-phenylalanine, tyrosine, or cyclohexylalanine, X 14 is arginine or alanine, X 15 is either proline or sarcosine, X 16 is cysteine or D-cysteine, X 17 is an optionally present amino acid that, if present, is either tryptophan or tyrosine, Z 1 is an optionally present protecting group that, if present, is covalently joined to the N-terminal amino group, Z 2 is an optionally present protecting group that, if present, is covalently joined to the C-terminal carboxy group, and wherein said peptide optionally contains a detectable label, or a pharmaceutically acceptable salt of said peptide.