Patent ID: 8101186

Claim:
A peptide capable of binding to human Fc neonatal receptor (FcRn), comprising the sequence: -Gly-X 6 —X 7 —X 8 —X 9 —X 10 —X 11 — wherein: X 6 is selected from the group consisting of a positively charge amino acid, an aromatic amino acid, a positively charged aromatic amino acid and an analog thereof X 7 is phenylalanine or a phenylalanine analog thereof X 8 and X 9 are each independently selected from the group consisting of glycine, sarcosine, aspartic acid, D -amino acids, α-aminoisobutyric acid, and an analog thereof, or X 8 , when taken together with X 9 , forms a dipeptide mimetic; X 10 is an amino acid or an analog thereof, or X 10 , when taken together with X 9 , forms a dipeptide mimetic; X 11 is a tyrosine or a tyrosine analog thereof; and wherein the peptide ranges from 7 to 50 amino acids in length, and the peptide binds to human FcRn.