Human EAAT1/GLAST-1 Antibody

GLAST-1 (Sodium dependent GLu/ASp Transporter 1; also SLC1A3 and EAAT1) is a 60‑62 kDa member of the SDF symporter family of molecules. It is expressed by glia, fibroblasts, and select neuron cell types such as hippocampal neurons. EAAT1 is known to transport L‑glutamate into glia, thus removing glutamate from synaptic areas where it either acts too long, or becomes toxic at elevated concentration. Its action is dependent on its ability to cotransport sodium. Human EAAT1 is a 542 amino acid (aa), 8-transmembrane variably glycosylated protein that contains N- and C-terminal cytoplasmic domains. Homodimers are reported to exist, but only when EAAT1 shows glycosylation. There are at least two potential isoform variants. One shows an Arg substitution for aa 430‑475, while a second shows a four aa substitution for aa 62‑542. Over an extracellular loop that encompasses aa 146‑237, human EAAT1 shares 92% aa identity with mouse EAAT1.