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GENE AND PROTEIN SUMMARY

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Gene name

ATP6V1G3

Description

ATPase, H+ transporting, lysosomal 13kDa, V1 subunit G3

Protein class

Mapped to UniProt SWISS-PROT, Transporters

Protein evidence

Medium

Entrez gene summary

This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of eukaryotic intracellular organelles. V-ATPase dependent organelle 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. Additional isoforms of many of the V1 and V0 subunit proteins are encoded by multiple genes or alternatively spliced transcript variants. This gene encodes one of three G subunit proteins. Transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Cytoplasm

Additional location(s)

Nucleus 

Staining summary

Staining of cytoplasm in all three cell lines with additional staining of nucleus in A-431.

Reliability (Single)

Antibodies in assay

HPA028701
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

The kidney showed moderate luminal membranous staining in the renal tubuli and strong cytoplasmic positivity in a subset of cells. Alveolar macrophages, islets of Langerhans and a subset of cells in lymphoid tissues were moderately positive while luminal membranous staining was observed in salivary ducts. Remaining normal cells were negative.

Tissue specificity

Staining in 14 out of 79 cell types

Reliability (Single)

Antibodies in assay

HPA028701
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 12
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 13
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 16% of the cancers

Antibodies in assay

HPA028701
 

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

Not detected
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

 

HPA028701

A-431 Skin Not detected

-

Weak
A-549 Lung Not detected

-

CACO-2 Colon Not detected

-

HEK 293 Embryonal kidney Not detected

-

HeLa Cervix Not detected

-

Hep-G2 Liver Not detected

-

MCF-7 Pleural effusion Not detected

-

PC-3 Bone marrow Not detected

-

RT-4 Urinary bladder Not detected

-

U-2 OS Bone Not detected

-

Moderate
U-251 MG Brain Not detected

-

Moderate

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA028701 pAb