Aminopeptidase N (AP-N) inhibitor is a reversible inhibitor of AP-N CD13 (IC50 = 25 μM). It is selective for AP-N CD13 over matrix metalloproteinase-9 (MMP-9), angiotensin converting enzyme (ACE), neutral endopeptidase (NEP), γ-glutamyl transpeptidase, and the serine proteases dipeptidyl peptidase 4 (DPP-4) and cathepsin G at a concentration of 1 mM. AP-N inhibitor is non-cytotoxic to U937 cells at a concentration of 100 μM.
Actinonin ((-)-Actinonin) is a naturally occurring antibacterial agent produced by Actinomyces and a potent reversible peptide deformylase (PDF) inhibitor with a Ki of 0.28 nM, it also is an apoptosis inducer. Actinonin inhibits aminopeptidase M, aminopeptidase N and leucine aminopeptidase, it also inhibits MMP-1, MMP-3, MMP-8, MMP-9, and hmeprin α with Ki values of 300 nM, 1,700 nM, 190 nM, 330 nM, and 20 nM, respectively. Actinonin has antiproliferative and antitumor activities[1][2][3][4][5].
Ketomethylenebestatin is a carba-analog of bestatin,the aminopeptidase (AP) inhibitor. Ketomethylenebestatin is 10 fold less effective as an inhibitor of aminopeptidases than bestatin.
Tripeptidyl peptidase II (TPPII) is a serine peptidase of the subtilisin-type which removes tripeptides from the free NH2 terminus of oligopeptides. AAF-CMK is an irreversible inhibitor of TPPII commonly used at 10-100 μM. It does not significantly interfere with the chymotrypsin-like activity of the proteasome. AAF-CMK also inhibits bleomycin hydrolase and puromycin-sensitive aminopeptidase when used at 50 μM.