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

G4291 Sigma-Aldrich

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,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   immunohistochemistry: 1:200 using Rat brain frozen sections
  western blot: 1:200-1:300 using Rat brain membranes
species reactivity   rat
form   lyophilized powder
shipped in   wet ice
storage temp.   −20°C
antibody form   affinity isolated antibody
Quality Level   100
antibody product type   primary antibodies
UniProt accession no.   P20236
Gene Information   human ... GABRA3(2556)
mouse ... Gabra3(14396)
rat ... Gabra3(24947)


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.


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.


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.

Physical form

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


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
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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...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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