GAT
GABA is the major inhibitory neurotransmitter in the brain and GABA re-uptake transport is one of the several pathways in the complex regulation of GABA activity. The first GABA transporter was GAT-1. The rat GAT, human GAT and mouse GAT are highly homologous (= 97%) proteins consisting of 599 amino acids. The proteins are termed rGAT-1, hGAT-1 and mGAT-1 respectively. Two other GABA transporters from rat brain related to GAT-1 but with distinct homology and pharmacological properties have been cloned, expressed in mammalian cells and named GAT-2 and GAT-3 respectively. Transporters function as molecularshuttles, transferring substrates across the membrane one moleculeat a time,then going back for more. GABA transporters belong to the family of Na+- and Cl-- coupled transporters, so named because these ions are co-transported with substrate. GABA transporters play a fundamental role in regulating extrasynaptic GABA levels, with inhibition of astroglial transporters being a critical target with anticonvulsant potential.
References
1.Soudijn W, et al. Curr Med Chem. 2000;7(10):1063–1079.
2.Borden LA. Neurochem Int. 1996;29(4):335–356.
3.Schousboe A, et al. Neurochem Res. 2014;39(10):1980–1987.
References
1.Soudijn W, et al. Curr Med Chem. 2000;7(10):1063–1079.
2.Borden LA. Neurochem Int. 1996;29(4):335–356.
3.Schousboe A, et al. Neurochem Res. 2014;39(10):1980–1987.
Membrane Transporter/Ion Channel
AMPK(52)
ASBT Transporter(6)
BCRP(9)
Beta Amyloid(26)
Carbonic Anhydrase(25)
Chloride Channel(29)
CRAC Channel(3)
CRM1(4)
Exportin-1(5)
FABP(4)
GAT(62)
GLUT(5)
Glutamate Transporter(1)
GlyT(10)
HCN Channel(4)
iGluR(33)
Monoamine Transporter(19)
Monocarboxylate Transporter(7)
MTP(1)
nAChR(5)
NADPH(25)
Na-K-ATPase(1)
NKCC(4)
NMDAR(45)
OCT(4)
Other Targets(13)
P2X Receptor(16)
P-glycoprotein(10)
Proton Pump(33)
Sodium Channel(103)
TRP/TRPV Channel(92)
URAT1(1)