"NOS" Related Products

Nitric Oxide Synthase (NOS) Activity Assay Kit (Colorimetric)

Cat.No.: Kit-2195
Product Overview: Nitric oxide synthases (EC 1.14.13.39) (NOS) are a family of enzymes that catalyze the production of nitric oxide (NO) from L-arginine. Nitric oxide (NO) plays an important role in neurotransmission, vascular regulation, immune response and apoptosis. In presence of NADPH, FAD, FMN, (6R)-5,6,7,8-tetrahydrobiopterin, calmodulin and heme, NOS catalyzes a five-electron oxidation of the guanidino nitrogen of L-arginine with molecular oxygen to generate NO and L-citrulline. There are three isoforms of NOS: endothelial (eNOS), neuronal (nNOS), and inducible (iNOS). nNOS accounts for the production of NO in central nervous system, where NO participates in cell communication and information storage. eNOS produces NO in blood vessels and is involved in regulation of vascular function. In contrast to other isoforms, iNOS is expressed de novo under oxidative stress conditions and produces large amounts of NO as a part of body’s defense mechanism. Nitric Oxide Synthase Activity Assay Kit provides an accurate and convenient method to assay NOS activity in a variety of samples. In this assay, nitric oxide generated by NOS undergoes a series of reactions and reacts with Griess Reagent 1 and 2 to generate a colored product with a strong absorbance at 540 nm. The assay is simple, sensitive and high-throughput adaptable and can detect as low as 5 μU of NOS activity.
Applications: Detection of NOS activity
Storage: -80°C
Shipping: Dry Ice
Size: 100 assays
Kit Components: NOS Assay Buffer; NOS Dilution Buffer; NOS Substrate; NOS Cofactor 1; NOS Cofactor 2 (25X); Nitrate Reductase; NOS (Positive Control); Enhancer; Nitrite Standard; Griess Reagent 1; Griess Reagent 2
Target Species: Mammalian samples
Detection method: Colorimetry (Abs: 540 nm)
Features & Benefits: Simple, HTP adaptable protocol
Sensitivity as low as 5 μU of NOS activity
Colorimetric detection

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Optional requirements on this protein    +Expand
C-fusion    N-fusion   Non-tagged
His    GST   Fc   Others
<1.0 eu/μg    <0.1 eu/μg   <0.01 eu/μg   Not required
Monomer Isolation    Dimer Isolation    Not required
>80% by SDS-PAGE    >90% by SDS-PAGE   >95% by SDS-PAGE   Others

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