The molecule is a tetrapeptide composed of L-asparagine, L-tryptophan, L-cysteine and L-histidine joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-asparagine, a L-tryptophan, a L-cysteine and a L-histidine.
(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S)-2,4-diamino-4-oxobutanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-sulfanylpropanoyl]amino]-3-(1H-imidazol-5-yl)propanoic acid