Anti-RBPJK/RBPJ Picoband® Antibody

Recombination signal binding protein for immunoglobulin kappa J region is a protein that in humans is encoded by the RBPJ gene. It is mapped to 4p15.2. The protein encoded by this gene is a transcriptional regulator important in the Notch signaling pathway. The encoded protein acts as a repressor when not bound to Notch proteins and an activator when bound to Notch proteins. It is thought to function by recruiting chromatin remodeling complexes containing histone deacetylase or histone acetylase proteins to Notch signaling pathway genes. Several transcript variants encoding different isoforms have been found for this gene, and several pseudogenes of this gene exist on chromosome 9.

Recombining binding protein suppressor of hairless; CBF-1; J kappa-recombination signal-binding protein; RBP-J kappa; RBP-J; RBP-JK; Renal carcinoma antigen NY-REN-30; RBPJ; IGKJRB; IGKJRB1; RBPJK; RBPSUH

Expressed in bone marrow, B and T-cells, PBMCs, natural killer cells, monocytes, dendritic cells and neutrophils. Both isoform 1 and 4 are predominantly expressed in lymphoid tissues and cells. Isoform 1 is expressed in thymocytes and both mature B and T-cells.

Transcriptional regulator that plays a central role in Notch signaling, a signaling pathway involved in cell-cell communication that regulates a broad spectrum of cell-fate determinations. Acts as a transcriptional repressor when it is not associated with Notch proteins. When associated with some NICD product of Notch proteins (Notch intracellular domain), it acts as a transcriptional activator that activates transcription of Notch target genes. Probably represses or activates transcription via the recruitment of chromatin remodeling complexes containing histone deacetylase or histone acetylase proteins, respectively. Specifically binds to the immunoglobulin kappa-type J segment recombination signal sequence. Binds specifically to methylated DNA. Binds to the oxygen responsive element of COX4I2 and activates its transcription under hypoxia conditions (4% oxygen) . Negatively regulates the phagocyte oxidative burst in response to bacterial infection by repressing transcription of NADPH oxidase subunits.

1. Hassed, S. J., Wiley, G. B., Wang, S., Lee, J.-Y., Li, S., Xu, W., Zhao, Z. J., Mulvihill, J. J., Robertson, J., Warner, J., Gaffney, P. M. RBPJ mutations identified in two families affected by Adams-Oliver syndrome. Am. J. Hum. Genet. 91: 391-395, 2012. 2. Kulic, I., Robertson, G., Chang, L., Baker, J. H. E., Lockwood, W. W., Mok, W., Fuller, M., Fournier, M., Wong, N., Chou, V., Robinson, M. D., Chun, H.-J., and 9 others. Loss of the Notch effector RBPJ promotes tumorigenesis. J. Exp. Med. 212: 37-52, 2015. 3. Masui, T., Long, Q., Beres, T. M., Magnuson, M. A., MacDonald, R. J. Early pancreatic development requires the vertebrate suppressor of hairless (RBPJ) in the PTF1 bHLH complex. Genes Dev. 21: 2629-2643, 2007.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.