Ca XII (CA12) Antibody – Rabbit Polyclonal

Carbonic anhydrases (CAs) are a large family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide. They participate in a variety of biological processes, including respiration, calcification, acid-base balance, bone resorption, and the formation of aqueous humor, cerebrospinal fluid, saliva, and gastric acid. This gene product is a type I membrane protein that is highly expressed in normal tissues, such as kidney, colon and pancreas, and has been found to be overexpressed in 10% of clear cell renal carcinomas. Two transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

CA12: Reversible hydration of carbon dioxide. Homodimer. Highly expressed in colon, kidney, prostate, intestine and activated lymphocytes. Expressed at much higher levels in the renal cell cancers than in surrounding normal kidney tissue. Moderately expressed in pancreas, ovary and testis. Inhibited by coumarins, saccharin, sulfonamide derivatives such as acetazolamide (AZA), benzenesulfonamide and derivatives (4-carboxyethylbenzene-sulfonamide, 4- carboxyethylbenzene-sulfonamide ethyl ester, 4-(acetyl-2- aminoethyl)benzene-sulfonamide, 4-aminoethylbenzene-sulfonamide) and Foscarnet (phosphonoformate trisodium salt). Belongs to the alpha-carbonic anhydrase family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Energy Metabolism - nitrogen; EC 4.2.1.1; Membrane protein, integral; Lyase

Chromosomal Location of Human Ortholog: 15q22

Cellular Component: integral to membrane; plasma membrane

Molecular Function: carbonate dehydratase activity; zinc ion binding

Biological Process: bicarbonate transport; one-carbon compound metabolic process; chloride ion homeostasis

Disease: Hyperchlorhidrosis, Isolated