Epoxomicin is a cell-permeable and irreversible proteasome inhibitor, primarily the chymotrypsin-like activity.
Z-Leu-Leu-Leu-AMC is a fluorogenic substrate for measuring the chymotrypsin-like protease activity of the 20S proteasome[1].
Calpain Inhibitor XI is a reversible covalent inhibitor of calpain-1. Calpain Inhibitor XI can be used for the research of neurodegenerative disorders[1].
Z-Leu-Leu-Glu-βNA (Z-Leu-Leu-Glu-β-naphthylamide) is a substrate for determination of the glutamylpeptidyl-peptide hydrolase activity of the 20S proteasome[1].
GSK3494245 (DDD01305143) is a potent, orally active, and selective inhibitor of the chymotrypsin-like activity of the parasite proteasome binding in a site sandwiched between the β4 and β5 subunits (IC50=0.16 μM for WT L. donovani proteasomes). GSK3494245 moderately inhibits chymotrypsin-like activity of human proteasome (IC50: purified 26S=13 µM; enriched THP-1 extracts IC50=40µM). GSK3494245 exhibits attractive biological and biosafety properties[1][2].
LMP7-IN-1 is an inhibitor of immunoproteasome (LMP7), may used in the research of inflammatory and autoimmune diseases, neurodegenerative diseases, proliferative diseases and cancer[1].
Ac-Leu-Leu-Norleucinol (ALLN) is a calpain inhibitor, can be used for research of Acetaminophen (HY-66005) induced acute liver damage, and lowers glutamic-oxalacetic transaminease (ALT) and glutamic-pyruvic transaminase (AST)[1].
Z-GGF-CMK is a protease inhibitor, inhibits ClpP1P2 and proteasome. Z-GGF-CMK exhibits cytotoxic activity against HepG2 cells with a CC50 value of 125 μM[1].
SAP2-IN-1 is a secreted aspartic protease 2 (SAP2) inhibitor and has potent SAP2 inhibitory activity with an IC50 value of 0.92 μM. SAP2-IN-1 also is a virulence factor inhibitor and is inactive in vitro. SAP2-IN-1 can be used for the research of infection[1].
Pepstatin is a specific aspartic protease inhibitor produced by actinomycetes, with IC50s of 4.5 nM, 6.2 nM, 150 nM, 290 nM, 520 nM and 260 nM for hemoglobin-pepsin, hemoglobin-proctase, casein-pepsin, casein-proctase, casein-acid protease and hemoglobin-acid protease, respectively. Pepstatin Ammonium also inhibits HIV protease.
Calpastatin subdomain B is a biological active peptide. (inhibit calpain activity)
MG-101 is a potent inhibitor of cysteine proteases which inhibits calpain I, calpain II, cathepsin B and cathepsin L with Kis of 190, 220, 150 and 500 pM, respectively.
PD151746 is a calpain inhibitor, shows a 20-fold selectivity for u-calpain (Ki = 0.26 ± 0.03 μM) over m-calpain (Ki = 5.33 ± 0.77 μM).IC50 value: 0.26 ± 0.03 μM (Ki, for μ-calpain), 5.33 ± 0.77 μM (Ki, for m-calpain) [1]Target: calpainin vitro: The μ-calpain inhibitor PD 151746 decreases oxLDL-induced cytotoxicity. [2]
ONX-0914 (PR-957) is a potent and selective immunoproteasome inhibitor with minimal cross-reactivity for the constitutive proteasome.IC50 Value: ~10 nM [1]in vitro: PR-957 blocked presentation of LMP7-specific, MHC-I-restricted antigens in vitro and in vivo. Selective inhibition of LMP7 by PR-957 blocked production of interleukin-23 (IL-23) by activated monocytes and interferon-gamma and IL-2 by T cells [1].in vivo: In mouse models of rheumatoid arthritis and lupus, ONX-0914 treatment reverses signs of disease and results in reductions in cellular infiltration, cytokine production and autoantibody levels at well-tolerated doses. The maximum tolerated dose (MTD) of ONX-0914 in mice to be 30 mg/kg body weight. IFN-g release is inhibited by ~60% at LMP7-selective concentrations of ONX-0914 and by ~90% at higher concentrations. Production of IL-2 is also inhibited by ~50% [1].
MG-132 is a potent, reversible, and cell-permeable 20S proteasome inhibitor which inhibits proteasomal chymotrypsin-like peptidase activity with an IC50 of 24.2 nM.
Z-LLNle-CHO (Z-Leu-Leu-Nle-CHO) is a γ-secretase inhibitor I. Z-LLNle-CHO induces caspase and ROS-dependent apoptosis by blocking the Akt-mediated pro-survival pathway. Z-LLNle-CHO can be used in cancer research, such as breast cancer and leukaemia[1][2].
Proteasome β2c/i-IN-1 (compound 37) is a subunit-selective human proteasome β2c and β2i inhibitor[1].
Marizomib (Salinosporamide A) is second-generation, irreversible, brain-penetrant, pan-proteasome inhibitor. Marizomib inhibits the CT-L (β5), CT-T-laspase-like (C-L, β1) and trypsin-like (T-L, β2) activities of the 20S proteasome (IC50=3.5, 28, and 430 nM, respectively)[1][2][3].
AK 295 (CX 295) is a calpain inhibitor that inhibits apoptosis through a calpain-dependent pathway. AK 295 improves neurological function in a rat model of spinal cord injury (SCI). AK 295 can be used in the study of neurodegenerative diseases, such as bulbar amyotrophy, stroke, Alzheimer's disease, Parkinson's disease, multiple sclerosis[1].
BC-05 is an orally active and potent inhibitor of CD13 and proteasome. BC-05 has an IC50 value of 0.13 μM for human CD13 and an IC50 value of 1.39 μM for the 20S proteasome. BC-05 can be used in multiple myeloma research[1].
Enzyme-IN-1 (compound 1) is a peptide-based inhibitor of N-terminal nucleophile (Ntn) hydrolases. Specifically, Enzyme-IN-1 inhibits the chymotrypsin-like activity (CT-L) of the 20S proteasome. Enzyme-IN-1 may has potential antiinflammatory properties[1].
BDA-410 is a cysteine protease inhibitor with ki values of 130 nM and 630 nM for calpain-1 and calpain-2, respevtively. BDA-410 inhibits recombinant falcipain-2B with an IC50 of 628 nM and exhibits anti-malarial effects[1].
Tomatine is a glycoalkaloid, found in the tomato plant (Lycopersicon esculentum Mill.). Tomatine elicits neurotoxicity in RIP1 kinase and caspase-independent manner. Tomatine promotes the upregulation of nuclear apoptosis inducing factor (AIF) in neuroblastoma cells. Tomatine also inhibits 20S proteasome activity[1].
Anticancer agent 82 is a FiVe1 derivative, an orally active and selective anticancer agent. FiVe1 binds type III intermediate filament protein vimentin (VIM), to induce hyperphosphorylation of Ser56, resulting selective disruption of mitosis and multinucleation in transformed VIM-expressing mesenchymal cancer cells. Anticancer agent 82 shows better oral bioavailability and pharmacokinetic profiles than FiVe1[1].
TCH-165 is a specific small molecule modulator of proteasome assembly, regulates the dynamic equilibrium between the 20S and 26S proteasome complexes, favoring 20S-mediated protein degradation; enhances the degradation of both α-syn and tau, does not induce the degradation of GAPDH, enhances the degradation of intrinsically disordered proteins in cell culture; display a decrease in assembled 26S and an increase in 20S proteasome in treated cells.
Ac-Nle-Pro-Nle-Asp-AMC is a specific substrate for 26S proteasome. Ac-Nle-Pro-Nle-Asp-AMC can be used for the 26S proteasome caspase-like activity analysis[1][2][3].
Calpain Inhibitor VI (SJA6017) is a synthesized peptide aldehyde inhibitor of calpain. Calpain Inhibitor VI inhibits purified m-calpain with the IC50 of 80 nM. Calpain Inhibitor VI can be used for the research of cataract[1].
Z-LLY-FMK (Calpain Inhibitor IV) is a calpain inhibitor, involved in apoptosis of many cell systems. Z-LLY-FMK inhibits the intestine apoptosis after common bile duct ligation[1].
VR23 is a small molecule that potently inhibited the activities of trypsin-like proteasomes (IC50 = 1 nM), chymotrypsin-like proteasomes (IC50 = 50-100 nM), and caspase-like proteasomes (IC50 = 3 μM).IC50 value: 1 nM (trypsin-like proteasome), 50-100 nM(chymotrypsin-like proteasome), 3 μM (caspase-like proteasome)Target: proteasomein vitro: VR23 is a novel proteasome inhibitor targeting β2 of the 20S proteasome subunit. VR23 produces a synergistic effect in killing multiple myeloma cells, including those that were resistant to bortezomib. VR23 as a structurally novel proteasome inhibitor with desirable properties as an anticancer agent.in vivo: VR23 shows effective antitumor and antiangiogenic activities in mice.
FK-448 Free base is an effective and specific inhibitor of chymotrypsin, with an IC50 of 720 nM.