Beta Galactosidase Polyclonal antibody

Beta Galactosidase Polyclonal Antibody for IF, IHC, WB, ELISA

Host / Isotype

Rabbit / IgG


human, mouse and More (2)





Cat no : 15518-1-AP


Acid beta galactosidase, Beta galactosidase, EBP, Elastin receptor 1, ELNR1, galactosidase, beta 1, GLB1, Lactase

Tested Applications

Positive WB detected inSH-SY5Y cells
Positive IHC detected inhuman gliomas tissue, human liver cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inHeLa cells

Recommended dilution

Western Blot (WB)WB : 1:500-1:1000
Immunohistochemistry (IHC)IHC : 1:20-1:200
Immunofluorescence (IF)IF : 1:50-1:500
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

15518-1-AP targets Beta Galactosidase in WB,IP,IF,IHC,ELISA applications and shows reactivity with human, mouse samples.

Tested Reactivity human, mouse
Cited Reactivityhuman, mouse, rat, bovine
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen Beta Galactosidase fusion protein Ag7792
Full Name galactosidase, beta 1
Calculated Molecular Weight 76 kDa
Observed Molecular Weight 67 kDa
GenBank Accession NumberBC007493
Gene Symbol GLB1
Gene ID (NCBI) 2720
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

What is the molecular weight of β-galactosidase (GLB1)?

The molecular weight of GLB1 is 76 kD, although this protein is known to have multiple isoforms with lower 

molecular weight values.

What is the function of GLB1?

The common name of β-galactosidase is lactase. This enzyme is responsible for catalyzing the hydrolysis of 

lactose to monosaccharide glucose and galactose. GLB1 also catalyzes hydrolysis of polymeric D-galactosyl 

residues (PMID: 23526073, doi: 10.1088/1757-899x/263/2/022046).

How is GLB1 used in our food?

GLB1 isolated from bacteria, fungi, yeast, plants, and other sources has been applied to the manufacturing 

of lactose-hydrolyzed products (PMID: 28500401).

How is GLB1 part of a positive feedback loop?

GLB1 transgalactosylates lactose, resulting in allolactose. Allolactose is the inducer for the lac operon and 

binds to the lac repressor, prompting GLB1 synthesis (PMIDs: 23526073, 28500401, 26394634).

What organisms express GLB1?

GLB1 is ubiquitous in nature and is produced across kingdoms in plants, microorganisms, and animals. 

Properties, such as optimal pH range and temperature preference, vary between species; fungal GLB1 

prefers acidic conditions, while yeast and bacteria have optimal conditions at more neutral pH values

(PMID: 28500401).

How is GLB1 utilized in transgenic animals?

Bacterial GLB1 is a widely used reporter gene in transgenic or knockout animals. The lacZ gene of E. coli 

has been used to identify cis-acting DNA elements that play a key role for the regulation of gene expression 

in mice. The lacZ gene can be incorporated into an endogenous gene, and it is frequently a used to indicate 

the success of Cre-loxP recombination events, which allows temporal control of lacZ expression. Mice a 

part of the Rosa26R line that also express Cre ubiquitously express Cre-inducible lacZ (PMID: 26394634).


Product Specific Protocols
WB protocol for Beta Galactosidase antibody 15518-1-APDownload protocol
IHC protocol for Beta Galactosidase antibody 15518-1-APDownload protocol
IF protocol for Beta Galactosidase antibody 15518-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



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The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.


Brice-Emmanuel (Verified Customer) (12-18-2023)

Work well in WB

  • Applications: Western Blot
  • Primary Antibody Dilution: 1/500
  • Cell Tissue Type: Mouse Heart Tissue
Beta Galactosidase Antibody Western Blot validation (1/500 dilution) in Mouse Heart Tissue (Cat no:15518-1-AP)

Lin (Verified Customer) (02-24-2022)

It is good for WB.

  • Applications: Western Blot

Lin (Verified Customer) (06-04-2021)

It works for skin IHC.

  • Applications: Immunohistochemistry
  • Primary Antibody Dilution: 1:100
  • Cell Tissue Type: human skin