ATP receptors.

ATP receptors continue to be found in an ever wider range of tissues in the brain and the periphery. Much of the recent research on these receptors focuses on features that would distinguish ATP-mediated excitatory synaptic transmission from that mediated through glutamate or acetylcholine receptors. These features include kinetics of the synaptic currents, voltage-independent calcium permeability of the underlying channels, interactions with adenosine, and various direct modulators of the ATP-gated ion channel.