MRT199665 is an effective and ATP-competitive, selective MARK/SIK/AMPK inhibitor (IC50s of 2/2/3/2 nM, 10/10 nM, and 110/12/43 nM for MARK1/MARK2/MARK3/MARK14, AMPKα1/AMPKα2, and SIK1/SIK2/SIK3, respectively). MRT199665 suppresses the phosphorylation of S

K145 hydrochloride is a selective sphk2 inhibitor with substrate competitiveness and oral activity, with IC50 of 4.3 µM and Ki of 6.4 µM. K145 hydrochloride can induce apoptosis and has strong antitumor activity.

BMS-593214 is a selective active site-directed factor VIIa inhibitor and a non-competitive inhibitor of the VIIa-activated substrate, FX, with antithrombotic and antihemorrhagic activity.BMS-593214 can be used to study electrically-induced carotid artery thrombosis (AT) and wire-induced vena cava thrombosis (VT).BMS-593214 has been shown to be an antithrombotic inhibitor of the VIIa activating substrate, FX, with antithrombotic and antihemorrhagic activity.

Nω-allyl-L-arginine is a competitive and reversible inhibitor of bovine brain nitric oxide synthase (nNOS), efficiently inactivating nNOS in a time-dependent manner. Additionally, Nω-allyl-L-arginine acts as a substrate, generating L-arginine, acrolein, and H2O.

2'-O-Methylcytidine is a nucleoside derivative and an inhibitor of hepatitis C virus (HCV) non-structural protein 5B (NS5B; IC50= 3.8 μM).1It inhibits HCV replication in a replicon assay (IC50= 21.2 μM). 1.Migliaccio, G., Tomassini, J.E., Carroll, S.S., et al.Characterization of resistance to non-obligate chain-terminating ribonucleoside analogs that inhibit hepatitis C virus replication in vitroJ. Bio. Chem.278(49)49164-49170(2003)

Competitive inhibitor of cGMP-dependent protein kinase (PKG); analog of a substrate peptide corresponding to a phosphorylation site of histone H2B. Competes with synthetic substrates (Ki = 86 mM) but does not inhibit phosphorylation of intact histones by

CBB1007 Hcl is a selective, reversible, and substrate competitive LSD1 inhibitor (IC50: 5.27 μM for hLSD1).

KC01 is an effective and selective inhibitor of ABHD16A. By measuring competitive gel-based ABPP (IC50 values of inhibition of ABHD16A by KC01 and KC02: ~0.2–0.5 μM and >10 μM, respectively). Testing by a PS substrate assay, IC50 values of inhibition of h

CBB1007 trihydrochloride is a selective, reversible, and substrate competitive LSD1 inhibitor (IC50: 5.27 μM for hLSD1).

12(S)-HEPE is a monohydroxy fatty acid synthesized from EPA by the action of 12-LO. Unstimulated neutrophils metabolize 12(S)-HEPE to 12(S),20-diHEPE, whereas stimulated neutrophils produce 5(S),12(S)-HEPE via the 5-lipoxygenase pathway. The competitive action of 12(S)-HEPE with arachidonic acid as a substrate for 5-LO in the formation of leukotrienes may provide a basis for the anti-inflammatory potential of ω-3 fatty acids.

UNC0379 is a selective, substrate-competitive inhibitor of the lysine methyltransferase SETD8.

6-Phosphogluconic acid is a potent and competitive phosphoglucose isomerase (PGI) inhibitor (Kis: 48 μM for glucose 6-phosphate and 42 μM for fructose 6-phosphate).

GSK3-IN-3 is a mitochondrial autophagy (mitophagy) inducer and GSK-3 inhibitor (IC50: 3.01 μM) that induces parkin-dependent mitochondrial autophagy. GSK3-IN-3 is non-ATP and non-substrate competitive and neuroprotective against 6-OHDA.

GRP78-IN-3, a potent small-molecule-competitive inhibitor of Hsp70 substrate binding and is a selective Grp78 (HSPA5) inhibitor with an IC50 of 0.59 μM. GRP78-IN-3 is 7-fold selective for HspA5 compared to HspA9 (IC50 of 4.3 μM) and >20-fold selective for HspA5 compared to HspA2 (IC50 of 13.9 μM).

BAY-707, a highly potent and selective substrate-competitive inhibitor of MTH1 (NUDT1) with an IC50 of 2.3 nM, is well-tolerated in mice and exhibits a favorable pharmacokinetic (PK) profile compared to other MTH1 compounds. However, it demonstrates a clear lack of anticancer efficacy both in vitro and in vivo[1].

Cambinol (SIRT1/2 Inhibitor IV) is a cell-permeable b-naphthol compound that inhibits the NAD-dependent deacetylase activity of SIRT1/2 (IC50: 56/59 μM, respectively) in a substrate-, but not NAD-, competitive manner. Cambinol inhibits SIRT5 deacetylase activity only at much higher concentrations (IC50 >300 μM) and no inhibitory for the class I and II HDACs. In BCL6-expressing Burkitt lymphoma cell lines, Cambinol-induced apoptosis has been attributed to the hyperacetylation of p53 and BCL6.Cambinol is a potent brain penetrant neutral sphingomyelinase (N-SMase) inhibitor (exosome inhibitor)

PI-273, a Substrate-Competitive, Specific Small-Molecule Inhibitor of PI4KIIα, Inhibits the Growth of Breast Cancer Cells

SIRT5 Inhibitor 6 is a potent, selective, and substrate-competitive inhibitor of SIRT5, exhibiting an IC50 of 3.0 μM, and demonstrates therapeutic potential for treating septic acute kidney injury (AKI) in vivo [1].

SIRT5 inhibitor 7 (compound 58), a selective and substrate-competitive SIRT5 inhibitor, exhibits anti-inflammatory properties by modulating protein succinylation and attenuating pro-inflammatory cytokine release. It demonstrates renal protective effects and is active in vivo, showing efficacy in AKI mouse models subjected to lipopolysaccharide (LPS) and cecal ligation/perforation (CLP)-induced sepsis-related acute kidney injury [1].

CBB1007 trihydrochloride is a cell-permeable amidino-guanidinium compound that acts as a potent, reversible and substrate competitive LSD1 selective inhibitor (IC50 = 5.27 μM for hLSD1). IC50 Value: 5.27 uM Target: hLSD1 CBB1007 efficiently can block LSD1-mediated demethylation of H3K4Me2 and H3K4Me (IC50 ≤ 5 μM) with no effect on H3K4Me3 and H3K9Me2, and LSD2 and JARID1A activities. Increases H3K4Me2 and H3K4Me contents (IC50 ≤ 5 μM), and causes activation of epigenetically suppressed CHRM4/M4-ArchR and SCN3A genes in F9 cells (IC50 ≤ 3.74 μM). CBB1007 was Shown to preferentially arrest the growth of pluripotent tumors with minimal effect on non-pluripotent cancer or normal somatic cells (IC50 ≥ 100 μM).

BCI-121 is a substrate-competitive SMYD3 inhibitor that inhibits the proliferation of the cancer cell.

K145 is inactive against SphK1 and other protein kinases. K145 induces cell apoptosis and has potently antitumor activity. K145 is a selective, substrate-competitive and orally active SphK2 inhibitor with an IC50 of 4.3 µM and a Ki of 6.4 µM.

Bz-Ala-Arg, a dipeptide, serves as a spectrophotometric substrate (0.4 M pyridine formate, pH 4.25) for human pancreatic carboxypeptidase B and plasma carboxypeptidase N. It is utilized to screen for competitive inhibitors of these enzymes [1].

SU3327 (halicin) is a potent, selective and substrate-competitive inhibitor of JNK(IC50 of 0.7 μM).

CBB1007 HCl is a cell-permeable amidino-guanidinium compound identified as a potent, reversible, and substrate-competitive inhibitor of LSD1 (IC50 = 5.27 μM for hLSD1). It effectively inhibits LSD1-mediated demethylation of H3K4Me2 and H3K4Me (IC50 ≤ 5 μM), without affecting H3K4Me3 and H3K9Me2 demethylation, nor the activities of LSD2 and JARID1A. Moreover, CBB1007 increases the levels of H3K4Me2 and H3K4Me (IC50 ≤ 5 μM) and activates epigenetically suppressed genes CHRM4/M4-ArchR and SCN3A in F9 cells (IC50 ≤ 3.74 μM). It preferentially inhibits the growth of pluripotent tumors with minimal impact on non-pluripotent cancer or normal somatic cells (IC50 ≥ 100 μM).

SIRT5 Inhibitor 5 is a potent substrate-competitive inhibitor of SIRT5, exhibiting an IC50 of 0.21 µM, and does not interact with the NAD+-binding pocket [1].

Leupeptin is a naturally occurring protease inhibitor that can inhibit cysteine, serine and threonine peptidases. Leupeptin is an organic compound produced by actinomycetes. Leupeptin inhibits serine proteinases (trypsin (Ki=3.5 nM), plasmin (Ki= 3.4 nM), porcine kallikrein), and cysteine proteinases (papain, cathepsin B (Ki = 4.1 nM), endoproteinase Lys-C). It does not inhibit α-chymotrypsin or thrombin. Leupeptin is a competitive transition state inhibitor and its inhibition may be relieved by an excess of substrate.

Furamidine is a cell-permeable, selective inhibitor of protein arginine methyltransferase 1 (PRMT1). Furamidine binds to strings of AT base pair sequences in DNA′s minor groove. Furamidine targets the enzyme active site and is primarily competitive with t

Teneligliptin (MP-513) is a potent chemotype prolylthiazolidine-based DPP-4 inhibitor, which competitively inhibits human plasma, rat plasma, and human recombinant DPP-4 in vitro, with IC50s of approximately 1 nM. Teneligliptin (MP-513) inhibits all these DPP-4 enzymes in a concentration-dependent manner. The IC50s of Teneligliptin (MP-513) for rhDPP-4, human plasma, and rat plasma are 0.889, 1.75, and 1.35 nM, respectively. A study of enzyme inhibition kinetics is conducted for Teneligliptin (MP-513) using Gly-Pro-MCA as the substrate and rhDPP-4 as the enzyme source. Plots based on the Michaelis-Menten equation reveals that Teneligliptin (MP-513) inhibits DPP-4 in a substrate-competitivemanner; the residual sum of squares for competitive and non-competitive models is 0.162 and 0.192, respectively. Ki, Km, and Vmax values are 0.406 nM, 24 μM, and 6.06 nmol/min, respectively. Teneligliptin (MP-513) inhibits the degradation of GLP-1(7-36)amide with an IC50 of 2.92 nM[1]. Oral administration of Teneligliptin (MP-513) in Wistar rats results in the inhibition of plasma DPP-4 with an ED50 of 0.41 mg/kg. Plasma DPP-4 inhibition is sustained even at 24 h after administration of Teneligliptin (MP-513). An oral carbohydrate-loading test in Zucker fatty rats shows that Teneligliptin (MP-513) at ≥0.1 mg/kg increases the maximum increase in plasmaglucagon-like peptide-1 and insulin levels, and reduces glucose excursions. This effect is observed over 12 h after a dose of 1 mg/kg. An oral fat-loading test in Zucker fatty rats also shows that Teneligliptin (MP-513) at 1 mg/kg reduces triglyceride and free fatty acid excursions. In Zucker fatty rats, repeated administration of Teneligliptin (MP-513) for two weeks reduces glucose excursions in the oral carbohydrate-loading test and decreased the plasma levels of triglycerides and free fatty acids under non-fasting conditions. Oral administration of Teneligliptin (MP-513) inhibits plasma DPP-4 in rats in a dose-dependent manner. The ED50 value for Teneligliptin (MP-513) is calculated to be 0.41 mg/kg, while those for Sitagliptin and Vildagliptin, 27.3 and 12.8 mg/kg, respectively[1]. Teneligliptin (MP-513) improves the histopathological appearance of the liver and decreases intrahepatic triglyceride levels in an NAFLD model mouse, which is associated with downregulation of hepatic lipogenesis-related genes due to AMPK activation[2]. [1]. Fukuda-Tsuru S, et al. A novel, potent, and long-lasting dipeptidyl peptidase-4 inhibitor, teneligliptin, improves postprandial hyperglycemia and dyslipidemia after single and repeated administrations. Eur J Pharmacol. 2012 Dec 5;696(1-3):194-202. [2]. Ideta T, et al. The Dipeptidyl Peptidase-4 Inhibitor Teneligliptin Attenuates Hepatic Lipogenesis via AMPK Activation in Non-Alcoholic Fatty Liver Disease Model Mice. Int J Mol Sci. 2015 Dec 8;16(12):29207-18.

CM-272 is a dual G9a/DNA methyltransferases (DNMTs) inhibitor.

Mefuparib hydrochloride induces apoptosis and possesses prominent anticancer activity in vitro and in vivo. Mefuparib hydrochloride (MPH) is an orally active, substrate-competitive and selective PARP1/2 inhibitor with IC50s of 3.2 nM and 1.9 nM, respectively.

BAY-707 is a substrate-competitive, highly potent and selective inhibitor of MTH1. Despite superior cellular target engagement and pharmacokinetic properties, inhibition of MTH1 with BAY-707 resulted in a clear lack of in vitro or in vivo anticancer efficacy either in mono- or in combination therapies.

GSK2807 is a potent and selective, SAM-competitive inhibitor of SMYD3 (Ki = 14 nM). GSK2807 bridges the gap between the SAM-binding pocket and the substrate lysine tunnel of SMYD3. GSK2807 may be useful for cancer treatment.

CBB1007 is a potent, reversible, and substrate competitive LSD1 inhibitor (IC50: 5.27 μM for hLSD1).

OK-1035 is a potent and selective DNA-PK inhibitor. When a synthetic peptide was used as a substrate, OK-1035 caused 50% inhibition of DNA-PK activity at 8 microM. OK-1035 inhibited the phosphorylation by DNA-PK of consensus peptide as well as that of recombinant human wild type-p53. Kinetic studies indicated that OK-1035 inhibited DNA-PK activity in an ATP-competitive manner.

UNC0379 TFA is a selective, substrate competitive inhibitor of lysine methyltransferase SETD8 (KMT5A) (IC50: 7.3 μM) and exhibits good selectivity for 15 other methyltransferases.

ICL-SIRT078 is a highly selective inhibitor of substrate-competitive SIRT2 that acts by displaying a significant neuroprotective effect in a lactacystin-induced model of Parkinsonian neuronal cell death in the N27 cell line.

Histatin-3, a 32-amino-acid peptide, exhibits potent antimicrobial activities and serves as a substrate for proprotein convertase 1 (PC1), where it is primarily cleaved at a site carboxy-terminal to Arg25 (HRGYR↓SN). Additionally, it acts as a moderately potent, reversible, and competitive inhibitor of furin-mediated cleavage of the pentapeptide pGlu-Arg-Thr-Lys-Arg-MCA fluorogenic substrate, with an inhibition constant (Ki) estimated at 1.98 μM [1].

GDP-α-D-mannose disodium gives a competitive inhibition with respect to GTP (Ki 14.7 μM) and an uncompetitive inhibition with respect to mannose-1-P (Ki 115 μM).GDP-α-D-mannose disodium is the donor substrate for mannosyltransferases and the precursor of

Tenofovir diphosphate (TFV-DP) is a competitive inhibitor of DNA polymerases, specifically targeting dATP, and it serves as a substrate for the reverse transcriptase (RT) of human immunodeficiency virus type 1 (HIV-1)[1].

AKTide-2T TFA, serving as an optimal in vitro substrate for AKT, demonstrates competitive inhibition of histone H2B phosphorylation with a Ki value of 12 nM. It effectively mimics the optimal phosphorylation sequence of Akt and acts as an inhibitory peptide, distinct from the wildtype AKTide due to the absence of Thr at the S22 position [1].

BRD0639 is a pioneering inhibitor targeting the interaction between PRMT5 and its substrate adaptor. As a competitive inhibitor of the PRMT5 binding motif (PBM), BRD0639 facilitates the investigation of activities dependent on PBM-associated PRMT5 functions [1].

Tenofovir diphosphate triethylamine (TFV-DP triethylamine) is a competitive inhibitor of DNA polymerases for dATP, functioning as a substrate for HIV type 1 reverse transcriptase (HIV-1 RT)[1].

Apcin is a potent and competitive inhibitor of anaphase-promoting complex/cyclosome (APC/C(Cdc20)) E3 ligase activity. Apcin competitively inhibits APC/C-dependent ubiquitylation by binding to Cdc20 and preventing substrate recognition. It acts by blockin