(Arg)9 (Nona-L-arginine) is a cell-penetrating peptide (CPP) made up of 9 arginine residues, which is an inhibitor of serine endoprotease Furin. (Arg)9 has neuroprotective property, exhibits neuroprotective activity with an IC50 of 0.78 μM in the glutamic acid model.

This is a effectively agonistic peptide (mimotope) for diabetogenic T cell clone BDC2.5. It can stimulate BDC2.5 cells with cells showing good response to this mimotope. 1040-31 peptide is specific for BDC2.5 TCR Tg+ (transgenic) T cells. This peptide is also known as p31.

Glyasperin C acts as a partial estrogen antagonist, it shows tyrosinase inhibitory activity (IC (50) = 0.13 +/- 0.01 microg/mL), it could be a promising candidate in the design of skin-whitening agents. Glyasperin C shows potent anti-vancomycin-resistant Enterococci effects (MIC 1.9 × 10-5-4.5 × 10-5 M for E. faecium and E. faecalis).