Anti-eNOS/NOS3 Antibody Picoband® Fluoro550 Conjugated

NOS3 (Nitric Oxide Synthase 3), also called ENOS, a nitric oxide synthase that generates NO in blood vessels and is involved with regulating vascular tone by inhibiting smooth muscle contraction and platelet aggregation. The NOS3 gene is mapped on 7q36.1. Variations in this gene are associated with susceptibility tocoronary spasm. Fulton et al. concluded the eNOS is an AKT substrate linking signal transduction by AKT to the release of the gaseous second messenger nitric oxide. AKT mediates the activation of eNOS, leading to increased nitric oxide production. Inhibition of the PI3K AKT pathway or mutation of the AKT site on eNOS protein at serine-1177 attenuated the serine phosphorylation and prevented the activation of eNOS. RT-PCR analysis showed that expression of NOS3 in human umbilical vein endothelial cells (HUVECs) and human aortic vascular smooth muscle cells (HAOVSMCs) was inversely proportional to that of NOS3AS.

Produces nitric oxide (NO) which is implicated in vascular smooth muscle relaxation through a cGMP-mediated signal transduction pathway. NO mediates vascular endothelial growth factor (VEGF) -induced angiogenesis in coronary vessels and promotes blood clotting through the activation of platelets. Isoform eNOS13C: Lacks eNOS activity, dominant-negative form that may down-regulate eNOS activity by forming heterodimers with isoform 1.

1. Ahsan, A., Norboo, T., Baig, M. A., Pasha, M. A. Q. Simultaneous selection of the wild-type genotypes of the G894T and 4B/4A polymorphisms of NOS3 associate with high-altitude adaptation. Ann. Hum. Genet. 69: 260-267, 2005. 2. Chen, C.-A., Wang, T.-Y., Varadharaj, S., Reyes, L. A., Hemann, C., Talukder, M. A. H., Chen, Y.-R., Druhan, L. J., Zweier, J. L. S-glutathionylation uncouples eNOS and regulates its cellular and vascular function. Nature 468: 1115-1118, 2010. 3. Fulton, D., Gratton, J.-P., McCabe, T. J., Fontana, J., Fujio, Y., Walsh, K., Franke, T. F., Papapetropoulos, A., Sessa, W. C. Regulation of endothelium-derived nitric oxide production by the protein kinase Akt. Nature 399: 597-601, 1999.