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AB3403-I Sigma-Aldrich

Anti-Beta Galactosidase Antibody, E. coli

Anti-Beta Galactosidase Antibody, E. coli is a highly specific chicken polyclonal antibody & that targets β-Galactosidase & has been tested in western blotting.

Synonym: Acid beta-galactosidase, Beta-galactosidase, Elastin receptor 1, Lactase



Related Categories Antibodies, Primary Antibodies More...
format   Affinity Purified
molecular weight   ~120 kDa observed
application(s)   Western Blotting
clone   Polyclonal Antibody
purification method   Affinity Purfied
concentration   Please refer to the Certificate of Analysis for the lot-specific concentration.
host   Chicken
species reactivity   Bacteria
NCBI accession no.   NP_752394
UniProt accession no.   P16278
gene symbol   GLB1(2720)
material size   100 µL
shipped in   wet ice
storage conditions   Stable for 1 year at 2-8°C from date of receipt.


Background information

β Galactosidase, also known as Beta-galactosidase, Beta-gal, LacZ, or Lactase, and encoded by the gene lacZ, is the enzyme in bacteria that hydrolyzes galactosides (sugars chains containing galactose) in to monosaccharides. β Galactosidase is typically an extracellularly produced enzyme that hydrolyzes the beta-glycosidic bond between galactose and another organic moiety. In E. coli, the β Galactosidase gene is present as part of the inducible lac operon system which is activated in the presence of lactose when glucose level is low. Today, bacterial beta galactosidase is used in molecular biology as a reporter marker to monitor gene expression, and because the enzyme has two functional domains, it forms the basis for α-complementation which is the methodology behind for the blue/white screening of recombinant clones. The presence or absence of an active β-galactosidase may be detected by X-gal, which produces a characteristic blue dye when cleaved by β-galactosidase, thereby providing an easy means of distinguishing the presence or absence of cloned product in a plasmid.

Physical form

Purified chicken polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.


Recombinant protein corresponding to E. Coli Beta Galactosidase.

Quality Assurance

Evaluated by Western Blotting in TOP10/PCU19 E. Coli lysate.

Western Blotting Analysis: A 1:500 dilution of this antibody detected Beta Galactosidase in 10 µg TOP10/PCU19 E. Coli lysate.

Usage Statement

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.

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.

Making Headway
Protocols & Articles


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, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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