The molecule is an oligopeptide comprising L-tryptophan, L-tyrosine, glycine, L-tyrosine, and two L-histidine residues coupled in sequence by peptide linkages. It has a role as an epitope.
(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-2-amino-3-(1H-indol-3-yl)propanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]acetyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-3-(1H-imidazol-5-yl)propanoic acid