PROBLEM TO BE SOLVED: To provide novel means that inhibits DPP-4.SOLUTION: The present invention provides a pentapeptide composed of Val-Tyr-Thr-Pro-Gly, and a composition containing the peptide.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】DPP-4を阻害する新規な手段の提供。【解決手段】Val-Tyr-Thr-Pro-Glyからなるペンタペプチド、及び当該ペプチドを含有する組成物。【選択図】なし