Glycine receptors (GlyRs) are inhibitory neurotransmitter receptors that play a crucial role in the central nervous system (CNS). They are primarily located in the spinal cord, brainstem, and retina, and are involved in mediating the inhibitory effects of glycine, an important amino acid neurotransmitter. GlyRs help regulate neural excitability and synaptic transmission, contributing to motor control, sensory processing, and pain modulation.