The molecule is a tetrapeptide composed of L-isoleucine, L-leucine and two L-tryptophan units joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-isoleucine, a L-leucine and a L-tryptophan.
(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-amino-3-methylpentanoyl]amino]-4-methylpentanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-(1H-indol-3-yl)propanoic acid