Glycine Transporters

Supporting information

Glycine transporters (GlyTs) belong to a family of high affinity Na+- and Cl--dependent neurotransmitter transporters proteins. There are two subtypes of glycine transporters; GlyT1 and GlyT2.

GlyT1s are predominantly located on glia within caudal brain areas, the diencephalon and olfactory bulb. They regulate synaptic glycine concentration, influencing NMDA receptor-mediated neurotransmission and are important in neonatal life for regulating glycine concentrations at inhibitory glycinergic synapses. GlyT2s are predominantly located on neurons within caudal brain areas, the spinal cord, brainstem and cerebellum. They are crucial for efficient transmitter loading of synaptic vesicles and lack-of-function mutations are fatal in the early neonatal period. Both GlyT1 and GlyT2 are unevenly distributed across the cell surface, which is thought to optimize the removal of glycine from the extracellular compartment.

Transport of glycine involves co-transport of Na+ and Cl- ions. The Na+ concentration gradient is maintained by the plasma membrane Na+,K+-ATPase and allows the accumulation of glycine against its concentration gradient. GlyTs are glycosylated and this is necessary for the protein trafficking to the plasma membrane. Further regulatory mechanisms of GlyTs include the presence of PKC, PKA and CaMK consensus sites, pH and syntaxin1 levels.

Pharmacologically, glycine transporter inhibitors may have applications in the treatment of muscle tone defects, epilepsy, schizophrenia, pain and neurodegenerative disorders.

To view external sources of pharmacological information for Glycine Transporters, please click here: BJP Guide

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Gene Species Gene Symbol Gene Accession No. Protein Accession No.
GlyT1 Human SLC6A9 NM_201649 P48067
Mouse Slc6a9 NM_008135 P28571
Rat Slc6a9 NM_053818 P28572
GlyT2 Human SLC6A5 NM_004211 Q9Y345
Mouse Slc6a5 NM_148931 Q761V0
Rat Slc6a5 NM_203334 P58295

Literature for Glycine Transporters

Schizophrenia Life Science Poster

Written by Jacob Ballon et al, this poster highlights key signaling pathways implicated in the development of schizophrenia, and the most promising strategies in novel drug development. Current research targets include cholinergic and glutamatergic signaling pathways, and the D2 receptor. Compounds available from Tocris are listed.

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Schizophrenia Life Science Poster

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Schizophrenia Life Science Poster

Written by J. Lieberman

Schizophrenia Life Science Poster

Our Schizophrenia poster higlights the targets and pathways representing the most promising strategies to pursue for novel drug development. Request copy today.

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