Glutamate Transporter EAAT4 (SLC1A6) Antibody – Rabbit Polyclonal

Glutamate is the main excitatory neurotransmitter in the brain. To date five glutamate Transporters have been cloned: GLAST (EAAT1), GLT1 (EAAT2), EAAC1 (EAAT3), EAAT4, and EAAT5. These transporters are believed to be critical in reducing potentially toxic extracellular concentration of glutamate by rapid uptake into nerve terminals and glial cells. Most recently two proteins, designated GTRAP41 and GTRAP48 (for glutamate transporter EAAT4 associated protein) that specifically interact with the intracellular carboxy-terminal domain of EAAT4 have been cloned and characterized. The proteins are proposed to modulate glutamate transport activity. GTRAP41 is 2388 aa protein (~270kD). It has seventeen 16-amino acid spectrin repeats, 2 alpha-actinin domains, and a pleckstrin homology domain. GTRAP48 is 1527 aa (~170kD). GTRAP48 possesses a PDZ domain, a regulatory G protein-signaling sequence, tandem dbl homology and pleckstrin homology domains characteristic of guanine nucleotide exchange factors for the Rho family of G proteins, and 2 proline-rich sequences. brain tissue. GTRAP41 and GTRAP48 are mainly expressed in the brain, and lower levels were also detected in liver and kidney. EAAT4, GTRAP41, and GTRAP48 are all immunolocalized in cerebellar Purkinje cell soma and dendrites, with little axonal staining. GTRAP48 was found to activate Rho. Expression of GTRAP48 induced the reorganization of the actin cytoskeleton. When GTRAP41 and GTRAP48 are coexpressed, GTRAP41 colocalized with actin in structures that resemble actin-stress fibers, a typical Rho-dependent effect. Overexpression of GTRAP41 and GTRAP48 enhanced glutamate uptake. GTRAP41 and GTRAP48 may therefore enhance glutamate transport either through an increase in the catalytic rate of the transporter or through an increase in cell-surface availability or by stabilizing EAAT4 at the membrane.

• 1. Jackson M et al (2001) Nature 410, 89-93; Ohara O et al (1998) Brain Res. Mol. Brain res. 57, 181; Stanekewich MC et al (1998) PNAS 95, 14158; Rumenapp U eat al (1999) FEBS Lett. 459, 313; Fukuhara JBC 274, 5868-5879

Small volumes of anti-SLC1A6 antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

MBS614813 is an antibody targeting SLC1A6. Also known as Anti - Glutamate Transporter EAAT4 (GTRAP41, Excitatory Amino Acid Transporter 4). Reactive in Rat. Host: Rabbit
Source: Rat.