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GENE AND PROTEIN SUMMARY

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Gene name

TAP2

Description

transporter 2, ATP-binding cassette, sub-family B (MDR/TAP)

Protein class

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

Protein evidence

Medium

Entrez gene summary

The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance. This gene is located 7 kb telomeric to gene family member ABCB2. The protein encoded by this gene is involved in antigen presentation. This protein forms a heterodimer with ABCB2 in order to transport peptides from the cytoplasm to the endoplasmic reticulum. Mutations in this gene may be associated with ankylosing spondylitis, insulin-dependent diabetes mellitus, and celiac disease. Alternative splicing of this gene produces two products which differ in peptide selectivity and level of restoration of surface expression of MHC class I molecules. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus, Nucleus but not nucleoli, Endoplasmic reticulum

Additional location(s)

 

Staining summary

Staining of endoplasmic reticulum and speckled staining of nucleus in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA001312
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Strong cytoplasmic immunoreactivity was observed in lymphoid tissues, urothelial cells and decidual cells. Cells of the gastro-intestinal tract were in general moderately stained.

Tissue specificity

Staining in 38 out of 72 cell types

Reliability (Single)

Antibodies in assay

HPA001312
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 4
Digestive (GI-tract) 10
Respiratory (lung) 3
Cardiovascular 1
Female tissues 11
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 12
Endocrine tissues 2

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 59% of the cancers

Antibodies in assay

HPA001312
 

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

HPA001312

HPA001312

A-431 Skin High
Moderate
A-549 Lung Medium
CACO-2 Colon Medium
HEK 293 Embryonal kidney High
HeLa Cervix Medium
Hep-G2 Liver Medium
MCF-7 Pleural effusion Medium
PC-3 Bone marrow Medium
RT-4 Urinary bladder Medium
U-2 OS Bone High
Moderate
U-251 MG Brain High
Moderate

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

Also mapped to

HPA001312 pAb
XXbac-BPG246D15.9 (100%)