Anti-CASR Antibody Picoband® (monoclonal, 11E9)

The calcium-sensing receptor (CaSR) is a G protein-coupled receptor that is expressed in the parathyroid hormone (PTH) -producing chief cells of the parathyroid gland, and the cells lining the kidney tubule. It senses small changes in circulating calcium concentration and couples this information to intracellular signaling pathways that modify PTH secretion or renal cation handling, thus this protein plays an essential role in maintaining mineral ion homeostasis. Mutations in this gene cause familial hypocalciuric hypercalcemia, familial, isolated hypoparathyroidism, and neonatal severe primary hyperparathyroidism.

E. coli-derived human CASR recombinant protein (Position: Q926-S1078) . Human CASR shares 80.5% and 78.6% amino acid (aa) sequence identity with mouse and rat CASR, respectively.

Expressed in the temporal lobe, frontal lobe, parietal lobe, hippocampus, and cerebellum. Also found in kidney, lung, liver, heart, skeletal muscle, placenta.

Calcium Signaling, Cancer, Cofactors, Vitamins/Minerals, Cytoskeleton/ECM, Extracellular Matrix, G Protein Signaling, Growth Factors/Hormones, Lipid Signaling, Metabolism, Neuroscience, Neurotransmission, Pathways and Processes, Receptors / Channels, Signal Transduction, Signaling Pathway, Structures, Vitamins/Minerals

G-protein-coupled receptor that senses changes in the extracellular concentration of calcium ions and plays a key role in maintaining calcium homeostasis (PubMed:7759551, PubMed:8702647, PubMed:8636323, PubMed:8878438, PubMed:17555508, PubMed:19789209, PubMed:21566075, PubMed:22114145, PubMed:23966241, PubMed:25292184, PubMed:25104082, PubMed:26386835, PubMed:25766501, PubMed:22789683) . Senses fluctuations in the circulating calcium concentration and modulates the production of parathyroid hormone (PTH) in parathyroid glands (By similarity) . The activity of this receptor is mediated by a G-protein that activates a phosphatidylinositol- calcium second messenger system (PubMed:7759551) . The G-protein- coupled receptor activity is activated by a co-agonist mechanism: aromatic amino acids, such as Trp or Phe, act concertedly with divalent cations, such as calcium or magnesium, to achieve full receptor activation (PubMed:27434672, PubMed:27386547) .

1. Coburn JW, Elangovan L, Goodman WG, Frazaõ JM (Dec 1999) . Calcium-sensing receptor and calcimimetic agents. Kidney International. Supplement 73: S52–8. 2. D'Souza-Li L (Aug 2006) . The calcium-sensing receptor and related diseases. Arquivos Brasileiros De Endocrinologia E Metabologia 50 (4) : 628–39. 3. Pidasheva S, Canaff L, Simonds WF, Marx SJ, Hendy GN (Jun 2005) . Impaired cotranslational processing of the calcium-sensing receptor due to signal peptide missense mutations in familial hypocalciuric hypercalcemia. Human Molecular Genetics 14 (12) : 1679–90.

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.