1. Signaling Pathways
  2. Immunology/Inflammation
  3. NO Synthase
  4. iNOS Isoform

iNOS

iNOS, also known as NOS-2, is a 131 kDa mammalian protein composed of 1,153 amino acids, which are assembled into two major domains, a C-terminal reductase—containing a flavin mononucleotide (FMN) binding subdomain—and a N-terminal oxygenase.iNOS adopts a zinc-bridged, homodimeric quaternary structure that allows the enzyme to convert L-Arg to L-citrulline with the concomitant production of NO. This transformation is governed by an elaborate electron transport chain, involving the cofactors nicotinamide adenine dinucleotide phosphate (NADPH), flavin adenine dinucleotide (FAD), flavin mononucleotide (FMN), heme, and (6R)-5,6,7,8-tetrahydrobiopterin (H4B), which are essential for this reaction. This process is mediated by CaM, which binds in a hinge region between the oxygenase and reductase domains.

iNOS Related Products (47):

Cat. No. Product Name Effect Purity
  • HY-18731
    1400W Dihydrochloride
    Inhibitor 99.94%
    1400W dihydrochloride is the dihydrochloride form of 1400W (HY-18731). 1400W is a slow, tight binding, and highly selective inducible nitric-oxide synthase (iNOS) inhibitor, with a Kd value ≤ 7 nM. 1400W inhibits iNOS induction in microglial cells, and reduces generation of NO, thereby mitigating oxidative stress and neuronal cell apoptosis in the rat cerebral cortex, and improving the spatial memory dysfunction caused by acute hypobaric hypoxia-reoxygenation.
  • HY-18732A
    L-NMMA acetate
    Inhibitor 98.58%
    L-NMMA acetate is a nitric oxide synthase inhibitor of all NOS isoforms including NOS1, NOS2, and NOS3. The Ki values for nNOS (rat), eNOS (human), and iNOS (mouse) are approximately 0.18, 0.4, and 6 µM, respectively.
  • HY-N1445
    Isoquercetin
    Inhibitor 99.87%
    Isoquercetin (Quercetin 3-glucoside) is a naturally occurring polyphenol that has antioxidant, anti-proliferative, and anti-inflammatory properties. Isoquercetin alleviates ethanol-induced hepatotoxicity, oxidative stress, and inflammatory responses via the Nrf2/ARE antioxidant signaling pathway. Isoquercetin regulates the expression of nitric oxide synthase 2 (NO2) via modulating the nuclear factor-κB (NF-κB) transcription regulation system. Isoquercetin has high bioavailability and low toxicity, is a promising candidate agent to prevent birth defects in diabetic pregnancies.
  • HY-B2162
    Chondroitin sulfate
    98.60%
    Chondroitin sulfate, one of five classes of glycosaminoglycans, has been widely used in the treatment of osteoarthritis. Chondroitin sulfate reduces inflammation mediators and the apoptotic process and is able to reduce protein production of inflammatory cytokines, iNOS and MMPs.
  • HY-12116
    L-NIL
    Inhibitor 99.20%
    L-NIL is an inducible NO synthase inhibitor, with an IC50 of 3.3 μM for miNOS.
  • HY-W484263
    hnNOS-IN-3
    Inhibitor
    hnNOS-IN-3 (compound 39) is a selective nNOS inhibitor, with a Ki of 0.32 μM. The nNOS binding of hnNOS-IN-3 is competitive with L-arginine. The selectivity of hnNOS-IN-3 for nNOS versus iNOS (Ki=37 μM) and eNOS (Ki=9.4 μM) is 115-fold and 29-fold, respectively.
  • HY-N0041R
    Ginsenoside Rb3 (Standard)
    Inhibitor
    Ginsenoside Rb3 (Standard) is the analytical standard of Ginsenoside Rb3. This product is intended for research and analytical applications. Ginsenoside Rb3 is extracted from steamed Panax ginseng C. A. Meyer. Ginsenoside Rb3 exhibits inhibitory effect on TNFα-induced NF-κB transcriptional activity with an IC50 of 8.2 μM in 293T cell lines. Ginsenoside Rb3 also inhibits the induction of COX-2 and iNOS mRNA.
  • HY-N0904R
    Ginsenoside C-K (Standard)
    Inhibitor
    Ginsenoside C-K (Standard) is the analytical standard of Ginsenoside C-K. This product is intended for research and analytical applications. Ginsenoside C-K, a bacterial metabolite of G-Rb1, exhibits anti-inflammatory effects by reducing iNOS and COX-2. Ginsenoside C-K exhibits an inhibition against the activity of CYP2C9 and CYP2A6 in human liver microsomes with IC50s of 32.0±3.6 μM and 63.6±4.2 μM, respectively.
  • HY-N0635
    Prim-O-glucosylcimifugin
    Inhibitor 99.94%
    Prim-O-glucosylcimifugin exerts anti-inflammatory effects through the inhibition of iNOS and COX-2 expression by through regulating JAK2/STAT3 signaling.
  • HY-N0904
    Ginsenoside C-K
    Inhibitor ≥98.0%
    Ginsenoside C-K, a bacterial metabolite of G-Rb1, exhibits anti-inflammatory effects by reducing iNOS and COX-2. Ginsenoside C-K exhibits an inhibition against the activity of CYP2C9 and CYP2A6 in human liver microsomes with IC50s of 32.0±3.6 μM and 63.6±4.2 μM, respectively.
  • HY-12119A
    GW274150 phosphate
    Inhibitor 99.85%
    GW274150 phosphate is a potent, selective, orally active and NADPH-dependent inhibitor of human inducible nitric oxide synthase (iNOS) (IC50=2.19 μM; Kd=40 nM) and rat iNOS (ED50=1.15 μM). GW274150 phosphate displays less potency for both humans or rats endothelial NOS (eNOS) and neuronal NOS (nNOS). GW274150 phosphate exerts a protective role in an acute model of lung injury inflammation.
  • HY-N0569
    Madecassic acid
    Inhibitor 99.23%
    Madecassic acid is isolated from Centella asiatica (Umbelliferae). Madecassic acid has anti-inflammatory properties caused by iNOS, COX-2, TNF-alpha, IL-1beta, and IL-6 inhibition via the downregulation of NF-κB activation in RAW 264.7 macrophage cells.
  • HY-N1382
    Asperuloside
    Inhibitor 99.79%
    Asperuloside is an iridoid isolated from Hedyotis diffusa, with anti-inflammatory activity. Asperuloside inhibits inducible nitric oxide synthase (iNOS), suppresses NF-κB and MAPK signaling pathways.
  • HY-N0041
    Ginsenoside Rb3
    Inhibitor 99.12%
    Ginsenoside Rb3 is extracted from steamed Panax ginseng C. A. Meyer. Ginsenoside Rb3 exhibits inhibitory effect on TNFα-induced NF-κB transcriptional activity with an IC50 of 8.2 μM in 293T cell lines. Ginsenoside Rb3 also inhibits the induction of COX-2 and iNOS mRNA.
  • HY-N6966
    Ethyl Caffeate
    Inhibitor 98.89%
    Ethyl Caffeate is a natural phenolic compound isolated from Bidens pilosa. Ethyl caffeate suppresses NF-κB activation and its downstream inflammatory mediators, inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and prostaglandin E2 (PGE2) in vitro or in mouse skin.
  • HY-N0268
    Irisflorentin
    Inhibitor 99.94%
    Irisflorentin, a naturally occurring isoflavone, is an abundant active constituent in Belamcanda chinensis. Irisflorentin markedly reduces the transcriptional and translational levels of inducible nitric oxide synthase (iNOS) as well as the production of NO. Anti-inflammatory activity.
  • HY-13571A
    Beclometasone dipropionate
    Inhibitor 99.89%
    Beclometasone dipropionate, the proagent of Beclometasone, is an orally active and potent glucocorticoid recepter agonist. Beclometasone dipropionate acts via a glucocorticoid receptor and suppresses inflammation and hyperproliferation. Beclometasone dipropionate can be used for asthma .
  • HY-N0698
    Crocin II
    Inhibitor 99.40%
    Crocin II is isolated from the fruit of Gardenia jasminoides with antioxidant, anticancer, and antidepressant activity. Crocin II inhibits NO production with an IC50 value of 31.1 μM. Crocin II suppresses the expressions of protein and m-RNA of iNOS and COX-2.
  • HY-136341
    7,8-Dihydroneopterin
    Activator 99.79%
    7,8-Dihydroneopterin, an inflammation marker, induces cellular apoptosis in astrocytes and neurons via enhancement of nitric oxide synthase (iNOS) expression. 7,8-Dihydroneopterin can be used in the research of neurodegenerative diseases.
  • HY-145846
    iNOs-IN-1
    Inhibitor 99.83%
    iNOs-IN-1 (YPW) is a potent inducible nitric oxide synthase (iNOS) inhibitor. iNOs-IN-1 can significantly inhibit the expression of IL-6 and iNOS, as well as reduce LPS-induced NO generation with dose-dependent manner in mouse macrophages. Anti-inflammatory effects.