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γ-Aminobutyric acid


A Ligand of GABA(A), GABA(B) Receptors and GABA Transporters

Cat #: G-110
Alternative Name GABA
Lyophilized Powder yes
  • Bioassay Tested
  • Source Synthetic
    MW: 103.1
    Purity: >98%
    Effective concentration 0.1-100 µM
    Chemical name 4-Aminobutanoic acid.
    Molecular formula C4H9NO2.
    CAS No.: 56-12-2
    Activity 1-100 µM activated recombinant α1β1γ2 channels with EC50 = 5 μM1.
    1. Horne, A.L. et al. (1992) Br. J. Pharmacol. 107, 732.
    Shipping and storage Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.
    Solubility Water. Centrifuge all product preparations before use (10000 x g 5 min).
    Storage of solutions Up to four weeks at 4°C or three months at -20°C.
    Our bioassay
    • Alomone Labs γ-Aminobutyric acid reversibley activates GABA(A) α2/β1/γ2 currents heterologously expressed in Xenopus oocytes.
      Alomone Labs γ-Aminobutyric acid reversibley activates GABA(A) α2/β1/γ2 currents heterologously expressed in Xenopus oocytes.
      Time course activation of GABA(A) α2/β1/γ2 currents by decreasing concentrations (between 1 µM and 1 mM, as indicated) of γ-Aminobutyric acid (#G-110). Holding membrane potential was -60 mV and γ-Aminobutyric acid was applied every 100 seconds as indicated by arrows.
    References - Scientific background
    1. Briggs, S.W. et al. (2011) Neural Plasticity 2011, 16.
    2. Khakhalin, A.S. et al. (2011) J. Neurophysiol. 106, 1065.
    3. Esmaeili, A. et al. (2008) J. N. Physiol. 101, 349.
    4. Salehi, B. et al. (2012) Int. J. Neuropsycopharm. FirstView, 1.
    5. Wong, C.G. et al. (2008) Ann. Neurol. 54 Suppl 6, S3.
    Scientific background

    γ-aminobutyric acid (GABA) is an amino acid derivate, synthesized from glutamate by the pyridoxal-L-phosphate (PLP)-dependent enzyme, glutamate decarboxylase (GAD)1. GABA provides the primary inhibitory signaling in the adult mammalian brain (CNS), and, to some degree of controversy, exerts a depolarizing response in the developing brain2.

    GABA is an agonist of two main receptor classes in the CNS: GABAA, an ionic ligand gated channel, and GABAB, a metabotrophic, G-protein coupled receptor. GABAA is assembled by 5 out of 16 possible subunits with α, β and either a γ or a δ (2:2:1 stoichiometry) being the most common. With an EC50 between 3 - 12μM it interacts with GABA to allow either an influx or an efflux of Cl- ions, into and out of the cell, respectively3. GABAB is a heterodimer comprised of the subunits GABAB1 and GABAB2. It reduces neurotransmitter release by inhibiting Ca2+ channels when activated presynaptically, and facilitates inward rectifying potassium channels, postsynaptically1.

    GABA deficiency is often the prime cause for epilepsy, with other notably disorders being autism4, spasticity, anxiety disorders, schizophrenia, and stiff-person syndrome5.

    Target GABA(A), GABA(B) receptors, GABA transporters
    Last update: 06/11/2022

    γ-Aminobutyric acid (#G-110) is a highly pure, synthetic, and biologically active compound.

    For research purposes only, not for human use
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