Pancreatic Polypeptide, rat is an agonist of NPY receptor, with high affinity at NPYR4. Pancreatic polypeptide (PP) is a 36-amino acid, C-terminally amidated peptide, and is a member of the PP-fold peptide family. It is produced and secreted by the PP cells of the islets of Langerhans.

Ginsenoside F4 has inhibitory effect on human lymphocytoma JK cell by inducing its apoptosis, the mechanism is related to the mitochondrial dysfunction and the increase of Bax expression and decrease of Bcl-2 expression.

1-N-Methyl-4-mercaptohistidine disulfide is a potential Duchenne chloroplast coupling factor 1 redox regulator, an oxidized form of ochratoxin A, that inhibits light-triggered CF1 ATPase activity.