2. Signaling Pathways
  3. Membrane Transporter/Ion Channel
  4. EAAT

EAAT

Excitatory amino acid transporter ; Glutamate transporter;

EAAT

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Excitatory amino acid transporters or EAATs are the major transport mechanism for extracellular glutamate in the nervous system. This family of five carriers (EAAT1-5 ) not only displays an impressive ability to regulate ambient extracellular glu concentrations but also regulate the temporal and spatial profile of glu after vesicular release. This dynamic form of regulation mediates several characteristic of synaptic, perisynaptic, and spillover activation of ionotropic and metabotropic receptors. EAATs function through a secondary active, electrogenic process but also possess a thermodynamically uncoupled ligand gated anion channel activity, both of which have been demonstrated to play a role in regulation of cellular activity.

The glial glutamate transporter EAAT2 plays a major role in glutamate clearance. EAAT2 can be upregulated by transcriptional or translational activation.EAAT2 is a potential target for the prevention of excitotoxicity.

EAAT Isoform Specific Products:

EAAT Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-107524
    (±)-HIP-B
    		Inhibitor
    (±)-HIP-B is a non-competitive excitatory amino acid transporter (EAAT) blocker that effectively blocks Glu uptake (IC50=17-18 μM). (±)-HIP-B is also a lead compound against ischemia-induced neuronal degeneration. (±)-HIP-B can be used in the study of neurological diseases.
    (±)-HIP-B
  • HY-107522B
    DL-TBOA ammonium
    		Inhibitor
    DL-TBOA ammonium is a potent non-transportable inhibitor of excitatory amino acid transporters with IC50s of 70 μM, 6 μM and 6 μM for excitatory amino acid transporter-1 (EAAT1), EAAT2 and EAAT3, respectively. DL-TBOA ammonium inhibits the uptake of [14C]glutamate in COS-1 cells expressing the human EAAT1 and EAAT2 with Ki valuesof 42 μM and 5.7 μM, respectively. DL-TBOA ammonium blocks EAAT4 and EAAT5 in a competitive manner with Ki values of 4.4 μM and 3.2 μM, respectively.
    DL-TBOA ammonium
  • HY-100838
    cis-α-(Carboxycyclopropyl)glycine
    cis-α-(Carboxycyclopropyl)glycine (L-CCG III) is a potent, competitive glutamate uptake inhibitor. cis-α-(Carboxycyclopropyl)glycine is a substrate of glutamate transporters (GluT) (EC50: 13 μM, 2 μM for EAAT 1 and EAAT 2, respectively). cis-α-(Carboxycyclopropyl)glycine inhibits a Na+-dependent high-affinity L-glutamate uptake in glial plasmalemmal vesicles (GPV) and synaptosomes.
    cis-α-(Carboxycyclopropyl)glycine
  • HY-101227
    (±)-threo-3-Methylglutamic acid
    		Inhibitor
    (±)-threo-3-Methylglutamic acid is a potent EAAT2/4 inhibitor. (±)-threo-3-Methylglutamic acid also is an ionotropic glutamate receptor agonist. (±)-threo-3-Methylglutamic acid inhibits glutamate uptake by rod outer segments.
    (±)-threo-3-Methylglutamic acid
  • HY-100801
    L-threo-3-Hydroxyaspartic acid
    		98.80%
    L-threo-3-Hydroxyaspartic acid is a potent EAAT inhibitor with Kis of 11, 19 and 14 μM for EAAT1, EAAT2 and EAAT3, respectively in HEK293 cell lines.
    L-threo-3-Hydroxyaspartic acid
  • HY-162454
    DA-023
    		Modulator
    DA-023 (Compound 4) is a selective positive allosteric modulator (PAM) of EAAT2 with an EC50 value of 1 nM.
    DA-023
  • HY-107525
    (±)-HIP-A
    		Inhibitor
    (±)-HIP-A is a non-competitive excitatory amino acid transporter (EAAT) blocker that effectively blocks Glu uptake (IC50=17-18 μM). (±)-HIP-A is also a lead compound against ischemia-induced neuronal degeneration. (±)-HIP-A can be used in the study of neurological diseases.
    (±)-HIP-A
  • HY-161062
    TAOA AM Ester trimethyl lock
    		Inhibitor
    TAOA AM Ester trimethyl lock is a high-affinity fluorescent prodrug-like inhibitor of the excitatory amino acid transporter (EAAT). It can penetrate the cell membrane and be activated by hydrolysis by endogenous cell esterases to form active EAAT inhibitors. TAOA AM Ester trimethyl lock can be used to study neurodegeneration and neuronal cell death.
    TAOA AM Ester trimethyl lock
  • HY-168773
    (R)-AS-1
    		Modulator
    (R)-AS-1 is a selective positive allosteric modulator of the excitatory amino acid transporter 2 (EAAT2), with an EC50 of 11 nM. (R)-AS-1 (at doses of 60 and 90 mg/kg) increases spontaneous locomotor activity in mice. Additionally, it demonstrates anticonvulsant activity in mouse models of seizures induced by maximal electroshock (MES), pentylenetetrazole (PTZ), or electrical stimuli (32 or 44 mA), with ED50s of 66.3, 36.3, 15.6, and 41.6 mg/kg, respectively. (R)-AS-1 can be used in neurological disease research.
    (R)-AS-1
Cat. No. Product Name / Synonyms Application Reactivity
EAAT Isoform Comparison

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