RT Journal Article SR Electronic T1 Cloning and expression of the alpha 2C-adrenergic receptor from the OK cell line. JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics SP 176 OP 181 VO 45 IS 2 A1 Blaxall, H S A1 Cerutis, D R A1 Hass, N A A1 Iversen, L J A1 Bylund, D B YR 1994 UL http://molpharm.aspetjournals.org/content/45/2/176.abstract AB The alpha 2-adrenergic receptors have been divided into four pharmacological subtypes, alpha 2A, alpha 2B, alpha 2C, and alpha 2D. The OK cell line, a cell line derived from an opossum kidney, expresses the alpha 2C-adrenergic receptor and is the prototypical cell line for the alpha 2C receptor subtype. The cloned human alpha 2C-C4 and rat RG10 receptors have been shown to express alpha 2C pharmacology. Here we report the cloning and expression of the OK alpha 2C-adrenergic receptor, OKc2. The receptor has 64% deduced amino acid identity and 21% similarity to the alpha 2-C4 receptor, giving an overall similarity of 85%. The clone, expressed in Chinese hamster ovary cells, has a pharmacology that correlates very well (r = 0.97) with that of the native OK cell alpha 2C-adrenergic receptor, and it is negatively coupled to adenylyl cyclase.