Receptors gaba-b

receptors, gaba-b

cell surface proteins which bind gaba and influence cells via interactions with g-proteins. Gaba-b receptors are pharmacologically characterised by their insensitivity to the blocker bicuculline and sensitivity to the agonist l-baclofen. They are found both presynaptically and postsynaptically, and act variously by inhibition of adenylate cyclase, activation of phospholipase a2, activation of potassium channels, and inactivation of voltage-activated calcium channels.

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