isozyme

3PO is a small-molecule inhibitor of PFKFB3 (IC50: 22.9 μM), inhibiting the proliferation of several human malignant hematopoietic and adenocarcinoma cell lines (IC50: 1.4-24 μM). It suppresses glucose uptake, and decreases the intracellular concentration

ZIP acetate is a novel, cell-permeable inhibitor of protein kinase Mζ (PKMζ), a constitutively active, atypical PKC isozyme involved in LTP maintenance. Selectively blocks PKMζ-induced synaptic potentiation in hippocampal slices in vitro. Reverses late-ph

(5Z,2E)-CU-3 is a potent and highly selective inhibitor of the DGKα isozyme with an IC50 value of 0.6 μM, competing with ATP and exhibiting a Km value of 0.48 mM. It specifically targets the catalytic region of DGKα without affecting the regulatory region and has demonstrated antitumor and immunogenic effects by promoting cancer cell apoptosis and T cell activation.

Desethylamiodarone hydrochloride (N-desethylamiodarone hydrochloride), formed by the CYP3A isozyme, is the main active metabolite of amiodarone, an antiarrhythmic drug that inhibits ATP-sensitive potassium channels with an IC50 of 19.1 μM.

SDZ-MKS 492 is a selective type III isozyme cyclic nucleotide phosphodiesterase inhibitor.

SAICAR, an intermediate of de novo purine nucleotide biosynthesis, selectively activates pyruvate kinase isoform M2 (PKM2) with an EC50 of 0.3 mM.

CP-640186 is an isozyme-nonselective Acetyl-CoA carboxylase (ACCase) inhibitor. The IC50s of CP-640186(CP 640186) is 53 nM and 61 nM for rat liver ACC1 and rat skeletal muscle ACC2 respectively.

NEU3-IN-2 (compound 963), a derivative of 2-deoxy-2,3-didehydro-N-acetylneuraminic acid (DANA) and a C9 biphenylcarbamate, functions as an inhibitor of NEU3, a human neuraminidase with four isozymes. This compound exhibits inhibitory activity with a Ki of 0.12 μM and an IC50 of 0.31 μM. It serves as a crucial tool in the exploration of NEU3 isozyme functionality. Additionally, its analogs, featuring an amide and a triazole linker, show selectivity towards NEU1 and NEU4 isozymes, respectively.

CAⅡ-IN-1 (compound 2i) is an inhibitor of the CA Ⅱ isozyme, exhibiting an IC50 of 0.44 µM. This compound is utilized in metabolic research.

Ap4dT serves as an inhibitor of human adenylate kinase isozyme 1 (hAK1), effectively suppressing the synthesis of ATP and ADP, with IC50 values of 42 μM and 38 μM, respectively.

N-desethyl Brinzolamide is an active metabolite of the carbonic anhydrase (CA) inhibitor brinzolamide .1It inhibits CAII and CAIV activities (IC50s = 1.28 and 128 nM, respectively). 1.Kim, C.-Y., Whittington, D.A., Chang, J.S., et al.Structural aspects of isozyme selectivity in the binding of inhibitors to carbonic anhydrases II and IVJ. Med. Chem.45(4)888-893(2002)

CP-640186 hydrochloride (CP 640186 HCl) is an isozyme-nonselective acetyl-CoA carboxylase (ACC) inhibitor, including rat liver ACC1 (IC50: 53 nM) and rat skeletal muscle ACC2 (IC50: 61 nM); with higher metabolic stability than CP-610431.

Ruboxistaurin hydrochloride (LY 333531 hydrochloride) is an Isozyme-selective inhibitor of protein kinase C (PKC); competitively and reversibly inhibits PKCβI and PKCβII (IC50 values are 4.7 and 5.9 nM respectively). Selective for PKCβ over other PKC isozymes (IC50values are 0.052, 0.25, 0.30, 0.36, 0.60 and >100 μM for PKCη, -δ, -γ, -α, -ε and -ζ respectively). Exhibits selectivity for PKC over other ATP-dependent kinases, including protein kinase A, casein kinase and src).

Arachidonoyl Thio-PC is a substrate for various phospholipase A2s (PLA2s), including sPLA2, cPLA2, and iPLA2. Cleavage of the sn-2 fatty acid by PLA2 produces a free thiol that reacts with chromogenic reagents like DTNB (Ellman's reagent) and DTP, facilitating PLA2 activity quantitation. Isozyme-specific cPLA2 activity can be measured by excluding or inhibiting sPLA2 and iPLA2 activities in the assay.

Zonisamide-13C2,15N is intended for use as an internal standard for the quantification of zonisamide by GC- or LC-MS. Zonisamide is an antiepileptic agent.1 It selectively inhibits the repeated firing of sodium channels (IC50 = 2 μg/ml) in mouse embryo spinal cord neurons and inhibits spontaneous channel firing when used at concentrations greater than 10 μg/ml.2 In rat cerebral cortex neurons, zonisamide (1-1,000 μM) inhibits T-type calcium channels with a maximum reduction of 60% of the calcium current.3 Zonisamide inhibits H. pylori recombinant carbonic anhydrase (CA) and the human CA isoforms I, II, and V with Ki values of 218, 56, 35, and 21 nM, respectively.4,5 In mice, it has anticonvulsant activity against maximal electroshock seizure (MES) and pentylenetetrazole-induced maximal, but not minimal, seizures (ED50s = 19.6, 9.3, and >500 mg/kg, respectively). Zonisamide (40 mg/kg, p.o.) prevents MPTP-induced decreases in the levels of dopamine , but not homovanillic acid or dihydroxyphenyl acetic acid , and increases MPTP-induced decreases in the dopamine turnover rate in mouse striatum in a model of Parkinson's disease.6 Formulations containing zonisamide have been used in the treatment of partial seizures in adults with epilepsy. |1. Masuda, Y., Ishizaki, M., and Shimizu, M. Zonisamide: Pharmacology and clinical efficacy in epilepsy. CNS Drug Rev. 4(4), 341-360 (1998).|2. Rock, D.M., Macdonald, R.L., and Taylor, C.P. Blockade of sustained repetitive action potentials in cultured spinal cord neurons by zonisamide (AD 810, CI 912), a novel anticonvulsant. Epilepsy Res. 3(2), 138-143 (1989).|3. Suzuki, S., Kawakami, K., Nishimura, S., et al. Zonisamide blocks T-type calcium channel in cultured neurons of rat cerebral cortex. Epilepsy Res. 12(1), 21-27 (1992).|4. Nishimori, I., Vullo, D., Minakuchi, T., et al. Carbonic anhydrase inhibitors: Cloning and sulfonamide inhibition studies of a carboxyterminal truncated α-carbonic anhydrase from Helicobacter pylori. Bioorg. Med. Chem. Lett. 16(8), 2182-2188 (2006).|5. De Simone, G., Di Fiore, A., Menchise, V., et al. Carbonic anhydrase inhibitors. Zonisamide is an effective inhibitor of the cytosolic isozyme II and mitochondrial isozyme V: Solution and X-ray crystallographic studies. Bioorg. Med. Chem. Lett. 15(9), 2315-2320 (2005).|6. Yabe, H., Choudhury, M.E., Kubo, M., et al. Zonisamide increases dopamine turnover in the striatum of mice and common marmosets treated with MPTP. J. Pharmacol. Sci. 110(1), 64-68 (2009).

Chrysophanol-1-O-β-gentiobioside, an anthraquinone glycoside derived from the seeds of Cassia obtusifolia, specifically inhibits hMAO-A isozyme activity with an IC50 value of 96.15 μM.

CP-610431 is a reversible, ATP-uncompetitive inhibitor of acetyl-CoA carboxylase (ACC) that exhibits isozyme nonselectivity, inhibiting both ACC1 and ACC2 with IC50 values of approximately 50 nM. CP-610431 offers potential application in metabolic syndrome research.

Sulfaphenazole (Plisulfan) is an inhibitor of CYP2C9 (Ki: 0.3 μM) that demonstrates at least 100-fold selectivity over other CYP450 isoforms (Ki: 63/29 μM for CYP2C8/CYP2C18, respectively, and no activity at CYP1A1, CYP1A2, CYP3A4, CYP2C19). At 10 μM, sulfaphenazole has been shown to inhibit endothelium-derived hyperpolarizing factor synthase, a CYP450 isozyme in the porcine coronary artery homologous to CYP2C8/9 that generates reactive oxygen species in coronary endothelial cells and modulates vascular tone and homeostasis.

URAT1 inhibitor 2 is an orally active inhibitor of URAT1 and CYP isozyme with IC50 values of 1.36 μM, 16.97 μM, and 5.22 μM for URAT1-mediated 14C-UA uptake, CYP1A2, and CYP2C9, respectively [URAT1 inhibitor 2 is a promising drug candidate for the study of hyperuricemia and gout].

1. Eriocitrin (Eriodictyol-7-O-Rutinoside) is powerful antioxidative flavonoid; (1) Prevents oxidative damages caused by acute exercise-induced oxidative stress.(2) Lipid-lowering effects in a rat model of high-fat diet. 2. Dietary Eriocitrin ameliorates diet-induced hepatic steatosis with activation of mitochondrial biogenesis. 3. Eriocitrin and Apigenin were identified as new potent inhibitors of human carbonic anhydrase VA isozyme.

Myristoylated TFA Pep2m (Myr-Pep2m TFA) is a cell-permeable peptide that effectively disrupts the interactions between the protein kinase ζ (PKMζ) downstream targets—N-ethylmaleimide-sensitive factor glutamate receptor subunit 2 (NSF GluR2). PKMζ, an autonomously active isozyme of protein kinase C (PKC), plays a crucial role in these interactions [1] [2].

DL-Glyceraldehyde 3-phosphate diethyl acetal barium acts as an inhibitor of the Aspartate Aminotransferase isozyme [1].

5α-Reductase is the enzyme responsible for converting testosterone into 5-α dihydrotestosterone (DHT), a potent androgen involved in male sexual differentiation. The 5α-reductase family comprises three subfamilies and five isozyme members: 5αR1, 5αR2, 5αR3, GPSN2, and GPSN2L.

Novel, cell-permeable inhibitor of protein kinase Mζ (PKMζ), a constitutively active, atypical PKC isozyme involved in LTP maintenance. Selectively blocks PKMζ-induced synaptic potentiation in hippocampal slices in vitro. Reverses late-phase LTP (IC50 = 1