D-Isoleucine is a selective activator of Asc-1 antiporter, which enhances long-term potentiation at the hippocampal CA1-CA3 via release of endogenous D-serine.

Cyclo(Pro-Val) shows cyctoxic, moderate antifungal and weak antitumor activities in vitro, it can inhibit the growth of Bacillus subtilis with the minimal inhibitory concentration (MIC) value of 0.8 g/L. Cyclo(Pro-Val) and cyclo(Pro-Tyr) are toxic to both suspension cells and seedlings of Pinus thunbergii, which may offer some clues to research the mechanism of pine wilt disease caused by pine wood nematode.

N-Phenylacrylamide inhibit human recombinant TGM2 by fluorescent transamidation assay.