In the field of antidiabetic bioactivity, various peptides such as AEEEYPDL, LGVGG, GGLGP, and small dipeptide fragments (VE, PP, and EA) have shown the ability to inhibit the activity of DPP-IV and α-glucosidase [48], participating in the modulation of the postprandial glycemic response and suggesting a potential role in the control of type-2 diabetes [13]. The gene discussed is DPP4; the disease is type 2 diabetes mellitus.