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GENE AND PROTEIN SUMMARY

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Gene name

B3GALNT1

Description

beta-1,3-N-acetylgalactosaminyltransferase 1 (globoside blood group)

Protein class

Blood group antigen proteins, Enzymes, Mapped to UniProt SWISS-PROT, Potential transmembrane proteins, Potentially secreted proteins

Protein evidence

Medium

Entrez gene summary

This gene is a member of the beta-1,3-galactosyltransferase (beta3GalT) gene family. This family encodes type II membrane-bound glycoproteins with diverse enzymatic functions using different donor substrates (UDP-galactose and UDP-N-acetylglucosamine) and different acceptor sugars (N-acetylglucosamine, galactose, N-acetylgalactosamine). The beta3GalT genes are distantly related to the Drosophila Brainiac gene and have the protein coding sequence contained in a single exon. The beta3GalT proteins also contain conserved sequences not found in the beta4GalT or alpha3GalT proteins. The carbohydrate chains synthesized by these enzymes are designated as type 1, whereas beta4GalT enzymes synthesize type 2 carbohydrate chains. The ratio of type 1:type 2 chains changes during embryogenesis. By sequence similarity, the beta3GalT genes fall into at least two groups: beta3GalT4 and 4 other beta3GalT genes (beta3GalT1-3, beta3GalT5). The encoded protein of this gene does not use N-acetylglucosamine as an acceptor sugar at all. Multiple transcript variants that are alternatively spliced in the 5' UTR have been described; they all encode the same protein. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

14 in total
0 with predicted TM region
1 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Vesicles

Additional location(s)

 

Staining summary

Staining of vesicles in the three cell lines.

Reliability (Single)

Antibodies in assay

HPA041204
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Most of the normal tissues displayed weak to moderate cytoplasmic positivity, in several cases with additional nuclear immunoreactivity. Salivary gland showed strong cytoplasmic and nuclear staining. Parietal cells of stomach and paneth cells of small intestine were strongly stained. Most squamous epithelia, breast, myocytes and lymphoid tissues were negative.

Tissue specificity

Staining in 38 out of 78 cell types

Reliability (Single)

Antibodies in assay

HPA041204
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 1
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 12
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 43% of the cancers

Antibodies in assay

HPA041204
 

Tissue

Cancer staining

Normal tissue
staining

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Normal tissue
staining

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

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RNA evidence

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

 

HPA041204

A-431 Skin Medium

-

Weak
A-549 Lung Low

-

CACO-2 Colon Medium

-

HEK 293 Embryonal kidney Not detected

-

HeLa Cervix Low

-

Hep-G2 Liver Not detected

-

MCF-7 Pleural effusion Medium

-

PC-3 Bone marrow High

-

RT-4 Urinary bladder High

-

U-2 OS Bone Medium

-

Weak
U-251 MG Brain Not detected

-

Moderate

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA041204 pAb