The presence of which compound or protein in a cell makes it quite likely that the cell is a gabaergic neuron is Glutamic acid decarboxylase.
Gamma-aminobutyric acid (GABA) is an amino acid that serves as the primary inhibitory neurotransmitter in the brain and a major inhibitory neurotransmitter in the spinal cord. It exerts its primary function in the synapse between neurons by binding to post-synaptic GABA receptors which modulate ion channels, hyperpolarizing the cell and inhibiting the transmission of an action potential. The clinical significance of GABA cannot be underestimated. Disorder in GABA signaling is implicated in a multitude of neurologic and psychiatric conditions. Modulation of GABA signaling is the basis of many pharmacologic treatments in neurology, psychiatry, and anesthesia. GABA is of great clinical significance. Medications that act on the GABA receptor are commonly used as therapeutic medications and substances of abuse, and it is unlikely that any physician, regardless of specialty, will not encounter clinical situations that involve GABA.
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