Dipeptidyl peptidases (DPPs) are a group of enzymes that play a crucial role in protein digestion and metabolism. They specifically break down dipeptides, which are compounds made up of two amino acids linked together. DPPs are important for regulating various biological processes, including the inactivation of certain hormones and neurotransmitters. One well-known member of this enzyme family is Dipeptidyl Peptidase-4 (DPP-4), which is involved in glucose metabolism and is a target for diabetes treatment. Inhibitors of DPP-4 can help improve blood sugar control in individuals with Type 2 Diabetes. Overall, DPPs are essential for maintaining proper physiological functions in the body.