• USA Home
  • N2783 - Nitric Oxide Synthase, Inducible from mouse

N2783 Sigma

Nitric Oxide Synthase, Inducible from mouse

recombinant, expressed in E. coli, buffered aqueous solution

Synonym: Inducible Nitric Oxide Synthase, NOS II, iNOS, macNOS



Related Categories 1.14.x.x Acting on paired donors with incorporation or reduction of molecular oxygen, 1.x.x.x Oxidoreductases, Application Index, Biochemicals and Reagents, Cell Biology,
recombinant   expressed in E. coli
form   buffered aqueous solution
activity   ≥4.0 units/mg protein
mol wt   mol wt 130 kDa (homodimer)
  mol wt 130 kDa (subunit, homodimer)
shipped in   dry ice
storage temp.   −70°C
Gene Information   mouse ... Nos2(18126)


Biochem/physiol Actions

NOS is responsible for the biosynthesis of nitric oxide from L-arginine. iNOS is not calcium/calmodulin dependent and has a Km = 16 μM for L-arginine.

Tumor-derived inducible nitric oxide synthase (iNOS) plays a vital role in stimulating tumor growth and vessel maturation. Therefore, it is considered to be a potential therapeutic target for anti-vascular cancer therapies. Unchecked activity of iNOS leads to overproduction of nitric oxide (NO), which is toxic for living cells. iNOS activity can be controlled at both transcription and translational level by regulating protein stability, dimerization, phosphorylation, cofactor binding and availability of oxygen and L-arginine as substrates. iNOS plays a vital role in excisional wound repair and exhibits gene therapy strategy to advance wound healing process in iNOS-deficient conditions such as diabetes and steroid treatment.

Unit Definition

One unit will produce 1.0 μmol of nitric oxide per minute at 37 °C in 50 mM HEPES, pH 7.4, containing 1 mM arginine, 1 mM magnesium acetate, 0.15 mM NADPH, 4.5 μM oxyhemoglobin, 18 μM tetrahydrobiopterin and 180 μM DTT.

Physical form

Solution in 50 mM HEPES, pH 7.4, with 10% glycerol, 8 μM tetrahydrobiopterin


Nitric Oxide Synthase, Inducible from mouse has been used in immunohistochemical studies. It is also used to evaluate the therapeutic efficacy of inducible nitric oxide synthase (NOS) on reperfusion-induced microcirculatory alterations and hemodynamic adverse effects in the microvasculature of skeletal muscle.

General description

Inducible nitric oxide synthase (iNOS), also known as inflammatory nitric oxide synthase, is a calcium independent isoenzyme, involved in synthesis of nitric oxide (NO). It is a soluble enzyme encoded by the gene mapped to mouse chromosome 11. iNOS is active in dimeric form and its activity is induced by cytokines and various other stimuli. iNOS is expressed in various inflammatory conditions.

Price and Availability

All labs need water

Biomedical Applications
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


Mitochondrial Stress and ROS

Oxidative stress is implicated in the pathogenesis of lipotoxicity in both animal and human studies. Chronic oxidative stress is linked to insulin resistance in multiple tissues. Oxidative stress is ...
BioFiles 2011, 6.4, 22.
Keywords: Anti-inflammatory agents, Apoptosis, Cancer, Cell signaling, Cellular processes, Gene expression, Indicators, Metabolism, Oxidations, Respiratory

Related Content

Enzymes & Proteins

Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
Keywords: Cell signaling, Diagnostic, Drug discovery, Molecular biology

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?