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  • G4291 - Anti-GABAA Receptor (α3 subunit) antibody produced in rabbit

G4291 Sigma

Anti-GABAA Receptor (α3 subunit) antibody produced in rabbit

affinity isolated antibody, lyophilized powder



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Neurotransmission, Antibodies to GABA and Glycine Receptors,
species reactivity   rat
application(s)   immunohistochemistry: 1:200 using Rat brain frozen sections
  western blot: 1:200-1:300 using Rat brain membranes
clone   polyclonal
antibody form   affinity isolated antibody
form   lyophilized powder
shipped in   wet ice
storage temp.   −20°C
Gene Information   human ... GABRA3(2556)
mouse ... Gabra3(14396)
rat ... Gabra3(24947)
biological source   rabbit
conjugate   unconjugated



peptide corresponding to amino acid residues 1-15 of human GABA(A) receptor α3 subunit. Identical in rat and mouse. Highly conserved (14/15 residues) in bovine.

General description

GABAA and GABAB receptors differ with regard to their ionic characteristics and pharmacological properties. The GABAA receptor is an ionotropic receptor that forms the GABA gated chloride channel and consists of several heterogeneous subunits with membrane recognition sites for benzodiazapenes.

Physical form

Lyophilized from phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin, 5% sucrose and 0.025% sodium azide


Anti-GABAA Receptor (α3 subunit) antibody produced in rabbit is suitable for immunohistochemistry at a working dilution of 1:200 using rat brain frozen sections and immunoblotting at 1:200-1:300 using rat brain membranes.

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Biochem/physiol Actions

The inhibitory neurotransmitter GABA signals through two distinct types of pre- and postsynaptic receptors, GABAA and GABAB. Both GABA receptors can regulate depression of synaptic transmission and be involved in the inhibition controlling neuronal excitability. α3 is a subtype of GABAA receptor expressed selectively by serotonergic and GABAergic neurons. Serotonergic neurons express strong α3 immunoreactivity but, do not show any α1 immunoreactivity. On the contrary, GABAergic neurons express both α1 and α3 subunits.

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RIDADR  NONH for all modes of transport
WGK Germany  3
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Antibody Basics

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Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
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