Amino acid neurotransmitter


An amino acid neurotransmitter is an amino acid which is able to transmit a nerve message across a synapse. Neurotransmitters are packaged into vesicles that cluster beneath the axon terminal membrane on the presynaptic side of a synapse in a process called endocytosis.
Amino acid neurotransmitter release is dependent upon calcium Ca2+ and is a presynaptic response. There are inhibitory amino acids or excitatory amino acids. Some EAA are L-Glutamate, L-Aspartate, L-Cysteine, and L-Homocysteine. These neurotransmitter systems will activate post-synaptic cells. Some IAA include GABA, Glycine, β-Alanine, and Taurine. The IAA depress the activity of post-synaptic cells.