Rap1 signaling prevents L-type calcium channel-dependent neurotransmitter release.

The small GTPase Rap1 contributes to fear learning and cortico-amygdala plasticity by inhibiting glutamate release from cortical neurons, but mechanisms of this inhibition remain unknown. Conversely, L-type calcium channels (LTCCs) become involved in glutamate release after fear learning and LTP induction. Here, we show that Rap1 deletion in mouse primary… CONTINUE READING