Anti-RNF43 Antibody Picoband®

RNF43 is a HAP95 (AKAP8L) binding ubiquitin ligase that promotes cell growth and is upregulated in colon cancer. The protein encoded by this gene is a RING-type E3 ubiquitin ligase and is predicted to contain a transmembrane domain, a protease-associated domain, an ectodomain, and a cytoplasmic RING domain. This protein is thought to negatively regulate Wnt signaling, and expression of this gene results in an increase in ubiquitination of frizzled receptors, an alteration in their subcellular distribution, resulting in reduced surface levels of these receptors. Mutations in this gene have been reported in multiple tumor cells, including colorectal and endometrial cancers. Alternative splicing results in multiple transcript variants encoding different isoforms.

Expressed in fetal kidney, fetal lung, in colon cancer tissues, hepatocellular carcinomas and lung adenocarcinomas. Overexpressed in colorectal cancer cell lines.

Cancer, Cell Biology, Oncoproteins, Oncoproteins/Suppressors, Proteasome / Ubiquitin, Proteolysis/Ubiquitin, Ring Finger E3 Ligase, Tumor Antigens, Tumor Biomarkers, Tumor Immunology, Tumor-Associated Antigens, Ubiquitin E3 Enzymes

E3 ubiquitin-protein ligase that acts as a negative regulator of the Wnt signaling pathway by mediating the ubiquitination, endocytosis and subsequent degradation of Wnt receptor complex components Frizzled. Acts on both canonical and non-canonical Wnt signaling pathway. Acts as a tumor suppressor in the intestinal stem cell zone by inhibiting the Wnt signaling pathway, thereby resticting the size of the intestinal stem cell zone.

1. Sugiura, T., Yamaguchi, A., Miyamoto, K. A cancer-associated RING finger protein, RNF43, is a ubiquitin ligase that interacts with a nuclear protein, HAP95. Exp. Cell Res. 314: 1519-1528, 2008. 2. Yagyu, R., Furukawa, Y., Lin, Y.-M., Shimokawa, T., Yamamura, T., Nakamura, Y. A novel oncoprotein RNF43 functions in an autocrine manner in colorectal cancer. Int. J. Oncol. 25: 1343-1348, 2004.

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.