GABA Receptor A, alpha 4, (GABA(A) receptor subuni ...
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Description
The GABA Receptor A, alpha 4, (GABA(A) receptor subunit alpha 4, GABR A4, GABRA4, Gamma aminobutyric acid (GABA) A receptor alpha 4) is a α- or alpha protein sometimes glycoprotein present in blood.The receptors are ligand binding factors of type 1, 2 or 3 and protein-molecules that receive chemical-signals from outside a cell. When such chemical-signals couple or bind to a receptor, they cause some form of cellular/tissue-response, e.g. a change in the electrical-activity of a cell. In this sense, am olfactory receptor is a protein-molecule that recognizes and responds to endogenous-chemical signals, chemokinesor cytokines e.g. an acetylcholine-receptor recognizes and responds to its endogenous-ligand, acetylcholine. However, sometimes in pharmacology, the term is also used to include other proteins that are drug-targets, such as enzymes, transporters and ion-channels.