Anti-IKB beta/NFKBIB Antibody Picoband®

NF-kappa-B inhibitor beta, also known as IKBB or TRIP9, is a protein that in humans is encoded by the NFKBIB gene. The protein encoded by this gene belongs to the NF-kappa-B inhibitor family, which inhibit NF-kappa-B by complexing with, and trapping it in the cytoplasm. This gene is mapped to 19q13.2. It has been found that in vivo, NFKBIB serves both to inhibit and to facilitate the inflammatory response. NFKBIB degradation releases NF-kappa-B dimers, which upregulate proinflammatory target genes such as TNF-alpha. Surprisingly, absence of NFKBIB results in a dramatic reduction of TNF-alpha in response to lipopolysaccharide, even though activation of NF-kappa-B is normal.

NF-kappa-B inhibitor beta; NF-kappa-BIB; I-kappa-B-beta; IkB-B; IkB-beta; IkappaBbeta; Thyroid receptor-interacting protein 9; TR-interacting protein 9; TRIP-9; NFKBIB; IKBB, TRIP9

E.coli-derived human IKB beta recombinant protein (Position: E56-E237) . Human IKB beta shares 82% and 80% amino acid (aa) sequence identity with mouse and rat IKB beta, respectively.

Epigenetics and Nuclear Signaling, Immunology, Innate Immunity, NFKB Pathway, Nuclear Signaling, Nuclear Signaling Pathways, Signal Transduction, Signaling Pathway, TLR Signaling

Inhibits NF-kappa-B by complexing with and trapping it in the cytoplasm. However, the unphosphorylated form resynthesized after cell stimulation is able to bind NF-kappa-B allowing its transport to the nucleus and protecting it to further NFKBIA- dependent inactivation. Association with inhibitor kappa B- interacting NKIRAS1 and NKIRAS2 prevent its phosphorylation rendering it more resistant to degradation, explaining its slower degradation.

1. Okamoto T, Ono T, Hori M, Yang J, Tetsuka T, Kawabe T et al. (November 1998) . Assignment of the IkappaB-beta gene NFKBIB to human chromosome band 19q13.1 by in situ hybridization. Cytogenet Cell Genet 82 (1–2) : 105–6. 2. Rao, P., Hayden, M. S., Long, M., Scott, M. L., West, A. P., Zhang, D., Oeckinghaus, A., Lynch, C., Hoffmann, A., Baltimore, D., Ghosh, S. I-kappa-B-beta acts to inhibit and activate gene expression during the inflammatory response. Nature 466: 1115-1119, 2010.

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.