The molecule is a tetrapeptide composed of L-asparagine, L-tryptophan, L-aspartic acid and L-serine joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-asparagine, a L-tryptophan, a L-aspartic acid and a L-serine.
(3S)-4-[[(1S)-1-carboxy-2-hydroxyethyl]amino]-3-[[(2S)-2-[[(2S)-2,4-diamino-4-oxobutanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-4-oxobutanoic acid