Anti-NOX5 Antibody Picoband® Fluoro488 Conjugated

NOX5 (Nadph Oxidase 5), also known as NOX5A or NOX5B, is a protein which in humans is encoded by the NOX5 gene. The International Radiation Hybrid Mapping Consortium mapped the NOX5 gene to chromosome 15. NOX5 is a novel NADPH oxidase that generates superoxide and functions as an H+ channel in a Ca2+-dependent manner. It is found that, when heterologously expressed, NOX5 was quiescent in unstimulated cells. However, in response to elevations of the cytosolic Ca2+ concentration, it generated large amounts of superoxide. Using RT-PCR and Southern and Western blot analyses, NOX5 was identified as a flavin-containing Ca2+-dependent oxidase present in hairy leukemic cells (HC), but not normal B cells.

Mainly expressed in pachytene spermatocytes of testis and in lymphocyte-rich areas of spleen and lymph nodes. Isoform v1 is expressed in spleen. Isoform v2 is expressed in testis. Also detected in ovary, placenta, pancreas, cardiac fibroblasts. Expressed in B-cells and prostate malignant cells. Isoform v1 and isoform v3 are expressed in epithelial colorectal adenocarcinoma cells. Isoform v2 and isoform v4 are expressed in endothelial cells. Isoform v1, isoform v2, isoform v3 and isoform v4 are expressed in pulmonary artery smooth muscle cells. Isoform v2 and isoform v5 are expressed in microvascular endothelial cells (at protein level) .

Apoptosis, Associated Proteins, Cell Biology, Cell Cycle, Cell Differentiation, Channels, Intracellular, Metabolism, Oxidative Stress, Pathways and Processes, Plasma Membrane, Redox Metabolism, Signal Transduction

Calcium-dependent NADPH oxidase that generates superoxide. Also functions as a calcium-dependent proton channel and may regulate redox-dependent processes in lymphocytes and spermatozoa. May play a role in cell growth and apoptosis. Isoform v2 and isoform v5 are involved in endothelial generation of reactive oxygen species (ROS), proliferation and angiogenesis and contribute to endothelial response to thrombin.

1. Banfi, B., Molnar, G., Maturana, A., Steger, K., Hegedus, B., Demaurex, N., Krause, K.-H. A Ca2+-activated NADPH oxidase in testis, spleen, and lymph nodes. J. Biol. Chem. 276: 37594-37601, 2001. 2. Kamiguti, A. S., Serrander, L., Lin, K., Harris, R. J., Cawley, J. C., Allsup, D. J., Slupsky, J. R., Krause, K.-H., Zuzel, M. Expression and activity of NOX5 in the circulating malignant B cells of hairy cell leukemia. J. Immun. 175: 8424-8430, 2005.