Dipeptidase 1 belongs to the dipeptidase family, functioning in catalyzing the breakdown of dipeptides into amino acids. Its structure typically includes specific active sites that recognize and decompose particular substrates. The enzyme is primarily expressed in small intestinal and kidney cells, participating in the process of protein digestion and absorption. In this way, it plays a crucial role in important biochemical reactions and metabolic pathways, essential for maintaining the amino acid balance in the organism. Its gene expression is tissue-specific, with significant differences in expression patterns across tissues or developmental stages. Mutations in the gene may affect the enzyme's activity, thereby influencing the metabolism of amino acids.