GABA receptors

GABA receptors
γ-aminobutyric acid receptors membrane receptors that bind the neurotransmitter γ-aminobutyric acid to facilitate its inhibitory effect on postsynaptic cells. There are two types: the more common GABA A receptors are ligand-gated chloride channels that attenuate postsynaptic potentials on neuron bodies and dendrites and inhibit the release of neurotransmitters at nerve terminals; the less common GABA B receptors include G proteins and activate cellular coupling systems to either open potassium channels, prevent the opening of calcium channels, or inhibit the production of cyclic adenosine monophosphate.

Medical dictionary. 2011.

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