The molecule is a tetrapeptide composed of two L-alanine units joined to two L-proline units by peptide linkages. It has a role as a metabolite. It derives from a L-alanine and a L-proline.
(2S)-1-[(2S)-1-[(2S)-2-[[(2S)-2-aminopropanoyl]amino]propanoyl]pyrrolidine-2-carbonyl]pyrrolidine-2-carboxylic acid