label: intracellular cAMP-activated cation channel activity involved in regulation of presynaptic membrane potential
label_lc: intracellular camp-activated cation channel activity involved in regulation of presynaptic membrane potential
description: "Enables the transmembrane transfer of a cation by a channel that opens when intracellular cAMP has been bound by the channel complex or one of its constituent parts, to regulate the presynaptic membrane potential."