Lys-Arg-Thr-Leu-Arg-Arg (KRTLRR) is a hexapeptide. Lys-Arg-Thr-Leu-Arg-Arg is a substrate of protein kinase C from EGF receptor. Lys-Arg-Thr-Leu-Arg-Arg can be used to determine the activity of protein kinase C.

CDK2 is a member of the eukaryotic S/T protein kinase family and its function is to catalyze the phosphoryl transfer of ATP γ-phosphate to serine or threonine hydroxyl (denoted as S0/T0) in a protein substrate.

AOB2796 is a novel PAR2 agonist; activated PAR2 signaling in cellular proliferation assays, phosphatidylinositol hydrolysis assays, and Ca(2+) mobilization assays, with potencies ranging from 200 to 1000 nM.