The molecule is a tetrapeptide composed of L-proline, L-valine, glycine, and L-proline joined by peptide linkages. It has a role as a metabolite. It derives from a L-proline, a L-valine and a glycine.
(2S)-1-[2-[[(2S)-3-methyl-2-[[(2S)-pyrrolidine-2-carbonyl]amino]butanoyl]amino]acetyl]pyrrolidine-2-carboxylic acid