The molecule is a tetrapeptide composed of L-lysine and three L-methionine units joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-lysine and a L-methionine.
(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2,6-diaminohexanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-methylsulfanylbutanoic acid