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GENE AND PROTEIN SUMMARY

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Gene name

ATP6V0A4

Description

ATPase, H+ transporting, lysosomal V0 subunit a4

Protein class

Mapped to UniProt SWISS-PROT, Potential transmembrane proteins, Transporters

Protein evidence

High

Entrez gene summary

This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of intracellular compartments of eukaryotic cells. V-ATPase dependent acidification is necessary for such intracellular processes as protein sorting, zymogen activation, receptor-mediated endocytosis, and synaptic vesicle proton gradient generation. V-ATPase is composed of a cytosolic V1 domain and a transmembrane V0 domain. The V1 domain consists of three A and three B subunits, two G subunits plus the C, D, E, F, and H subunits. The V1 domain contains the ATP catalytic site. The V0 domain consists of five different subunits: a, c, c', c'', and d. This gene is one of four genes in man and mouse that encode different isoforms of the a subunit. Alternatively spliced transcript variants encoding the same protein have been described. Mutations in this gene are associated with renal tubular acidosis associated with preserved hearing. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

3 in total
3 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Cytoplasm

Additional location(s)

 

Staining summary

Staining of cytoplasm in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA018029
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Subsets of cells in renal tubuli and heart muscle showed strong cytoplasmic staining while stomach displayed moderate cytoplasmic staining. Remaining normal cells were generally negative.

Tissue specificity

Staining in 10 out of 79 cell types

Reliability (Single)

Antibodies in assay

HPA018029
 

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 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 11
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 0% of the cancers

Antibodies in assay

HPA018029
 

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

Low
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

 

HPA018029

A-431 Skin Low

-

Strong
A-549 Lung Low

-

CACO-2 Colon Low

-

HEK 293 Embryonal kidney Not detected

-

HeLa Cervix Low

-

Hep-G2 Liver Not detected

-

MCF-7 Pleural effusion Low

-

PC-3 Bone marrow Low

-

RT-4 Urinary bladder Low

-

U-2 OS Bone Low

-

Moderate
U-251 MG Brain Not detected

-

Weak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA018029 pAb