DL-Alanyl-L-lysine is a dipeptide composed of DL-alanine and L-lysine. DL-alanine is a racemic mixture of D-alanine and L-alanine, with L-alanine being a non-essential amino acid involved in protein synthesis and glucose metabolism, and D-alanine being less common in natural proteins but important in certain bacterial cell walls. L-lysine is an essential amino acid crucial for protein synthesis, tissue repair, and enzyme production. This dipeptide could be explored in studies on peptide synthesis, metabolic pathways, and the effects of incorporating both D- and L-amino acids in biological systems.