Anti-delta 1 Catenin/CAS/CTNND1 Antibody Picoband®

P120, and called catenin delta-1 is a protein that in humans is encoded by the CTNND1 gene. This gene encodes a member of the Armadillo protein family, which function in adhesion between cells and signal transduction. Multiple translation initiation codons and alternative splicing result in many different isoforms being translated. Not all of the full-length natures of the described transcript variants have been determined. Read-through transcription also exists between this gene and the neighboring upstream thioredoxin-related transmembrane protein 2 (TMX2) gene.

Isoform 2 and isoform 3 function as proton-gated sodium channels; they are activated by a drop of the extracellular pH and then become rapidly desensitized. The channel generates a biphasic current with a fast inactivating and a slow sustained phase. Has high selectivity for sodium ions and can also transport lithium ions with high efficiency. Isoform 2 can also transport potassium, but with lower efficiency. It is nearly impermeable to the larger rubidium and cesium ions. Isoform 3 can also transport calcium ions. Mediates glutamate-independent Ca2+entry into neurons upon acidosis. This Ca2+overloading is toxic for cortical neurons and may be in part responsible for ischemic brain injury. Heteromeric channel assembly seems to modulate channel properties. Functions as a postsynaptic proton receptor that influences intracellular Ca2+concentration and calmodulin-dependent protein kinase II phosphorylation and thereby the density of dendritic spines. Modulates activity in the circuits underlying innate fear.

1. Bonne, S., van Hengel, J., van Roy, F. Chromosomal mapping of human armadillo genes belonging to the p120 (ctn) /plakophilin subfamily. Genomics 51: 452-454, 1998. 2. Dillon, D. A., D'Aquila, T., Reynolds, A. B., Fearon, E. R., Rimm, D. L. The expression of p120ctn protein in breast cancer is independent of alpha- and beta-catenin and E-cadherin. Am. J. Path. 152: 75-82, 1998. 3. Ghoumid, J., Stichelbout, M., Jourdain, A.-S., Frenois, F., Lejeune-Dumoulin, S., Alex-Cordier, M.-P., Lebrun, M., Guerreschi, P., Duquennoy-Martinot, V., Vinchon, M., Ferri, J., Jung, M., Vicaire, S., Vanlerberghe, C., Escande, F., Petit, F., Manouvrier-Hanu, S. Blepharocheilodontic syndrome is a CDH1 pathway-related disorder due to mutations in CDH1 and CTNND1. Genet. Med. 19: 1013-1021, 2017.

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 freezing and thawing.