Anti-EAAT4 (extracellular) Antibody

Excitatory amino acid transporter 4, Sodium-dependent glutamate/aspartate transporter, SLC1A6
    Cat #: AGC-024
    Alternative Name Excitatory amino acid transporter 4, Sodium-dependent glutamate/aspartate transporter, SLC1A6
  • Lyophilized Powder
  • Antigen Incl.
  • Type: Polyclonal
    Host: Rabbit
    Reactivity: m, r
    May also work in: h*
    Immunogen
    • Peptide (C)TRTIVRTDNGSE, corresponding to amino acid residues 205-216 of rat EAAT4 (Accession O35921). 2nd extracellular loop.
    • Anti-EAAT4 (extracellular) Antibody
    Accession (Uniprot) Number O35921
    Gene ID 84012
    Peptide confirmation Confirmed by amino acid analysis and mass spectrometry.
    Homology Mouse - identical; human - 10/12 amino acid residues identical.
    RRID AB_2340947.
    Purity Affinity purified on immobilized antigen.
    Form Lyophilized powder. Reconstituted antibody contains phosphate buffered saline (PBS), pH 7.4, 1% BSA, 0.05% NaN3.
    Isotype Rabbit IgG.
    Storage before reconstitution The antibody ships as a lyophilized powder at room temperature. Upon arrival, it should be stored at -20°C.
    Reconstitution 50 µl or 0.2 ml double distilled water (DDW), depending on the sample size.
    Antibody concentration after reconstitution 0.8 mg/ml.
    Storage after reconstitution The reconstituted solution can be stored at 4°C for up to 1 week. For longer periods, small aliquots should be stored at -20°C. Avoid multiple freezing and thawing. Centrifuge all antibody preparations before use (10000 x g 5 min).
    Negative control antigen storage before reconstitution Lyophilized powder can be stored intact at room temperature for 2 weeks. For longer periods, it should be stored at -20°C.
    Negative control antigen reconstitution 100 µl double distilled water (DDW).
    Negative control antigen storage after reconstitution -20°C.
    Preadsorption Control 1 µg peptide per 1 µg antibody.
    Standard quality control of each lot Western blot analysis.
    Applications: wb
    May also work in: ic*, ifc*, ih*, ip*, lci*
    Western blot
    • Anti-EAAT4 (extracellular) Antibody
      Western blot analysis of mouse (lanes 1 and 3) and rat (lanes 2 and 4) brain lysate:
      1,2. Anti-EAAT4 (extracellular) Antibody (#AGC-024), (1:200).
      3,4. Anti-EAAT4 (extracellular) Antibody, preincubated with the negative control antigen.
    References
    1. Tzingounis, A.V. and Wadiche, J.I. (2007) Nat. Rev. Neurosci. 8, 935.
    2. Beart, P.M. and O’Shea, R.D. (2007) Br. J. Pharmacol. 150, 5.
    Scientific background

    L-Glutamate (Glu) is an abundant amino acid that functions as the major excitatory neurotransmitter in the central nervous system. However, excess of Glu in the extracellular synaptic milieu leads to neuronal cell death by a process known as excitotoxicity.

    The extracellular levels of Glu are regulated by a family of high affinity plasma membrane transporters called excitatory amino acid transporters (EAATs) which are responsible for the re-uptake of Glu into the cells1,2.

    The EAAT family includes five members (EAAT1-EAAT5) that are members of the solute carrier family 1 (SLC1) of Na+-dependent transporters that also includes the neutral amino acid transporters ASCT1 and ASCT2.

    The Glu transporters present an unusual topology of eight transmembrane domains with two re-entrant loops and intracellular N- and C- termini. The transporter is likely assembled as a trimer where each monomer is a functional unit capable of binding the Glu substrate.

    The transport of Glu into the cells by the EAAT transporters is coupled to the Na+ and K+ electrochemical gradient as a driving force. Hence, the uptake of Glu is dependent on the co-transport of three Na+ and one H+ ions, and the counter transport of one K+ ion. 

    In addition, to the well documented Glu uptake, the EAAT transporters show a Glu-independent Cl- conductance. The physiological significance of the Cl- current through the EAATs is currently unknown1,2.

    EAAT2 as well as EAAT1 are expressed predominantly in glia cells, while EAAT3 (Excitatory Amino Acid Transporter 3), EAAT4 and EAAT5 are mostly expressed in neurons.

    As mentioned, EAAT transporters represent the only (significant) mechanism for removal of glutamate from the extracellular fluid and hence are essential for the long-term maintenance of low and non-toxic concentrations of glutamate and the preservation of normal excitatory synaptic transmission.

    In addition to Glu uptake, the glutamate transporters provide glutamate for the synthesis of g-Aminobutyric acid (GABA), glutathione and protein, suggesting an interactive role between EAATs and cellular metabolism1,2.

    Dysregulation of EAAT activities has been implicated in several neurodegenerative disorders such as Alzheimer’s disease, traumatic brain injury, epilepsy and schizophrenia, suggesting that EAATs can be a useful target for the treatment of these conditions1,2.

    Application key:

    CBE- Cell-based ELISA, FC- Flow cytometry, ICC- Immunocytochemistry, IE- Indirect ELISA, IF- Immunofluorescence, IFC- Indirect flow cytometry, IHC- Immunohistochemistry, IP- Immunoprecipitation, LCI- Live cell imaging, N- Neutralization, WB- Western blot

    Species reactivity key:

    H- Human, M- Mouse, R- Rat
    Last update: 30/01/2020

    Alomone Labs is pleased to offer a highly specific antibody directed against an extracellular epitope of the rat Excitatory amino acid transporter 4. Anti-EAAT4 (extracellular) Antibody (#AGC-024) can be used in western blot analysis. It has been designed to recognize EAAT4 from rat and mouse and human samples.

    For research purposes only, not for human use
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