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GENE AND PROTEIN SUMMARY

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Gene name

ABCC5

Description

ATP-binding cassette, sub-family C (CFTR/MRP), member 5

Protein class

Candidate cancer biomarkers, Mapped to UniProt SWISS-PROT, Potential transmembrane proteins, Transporters

Protein evidence

Medium

Entrez gene summary

The 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 MRP subfamily which is involved in multi-drug resistance. This protein functions in the cellular export of its substrate, cyclic nucleotides. This export contributes to the degradation of phosphodiesterases and possibly an elimination pathway for cyclic nucleotides. Studies show that this protein provides resistance to thiopurine anticancer drugs, 6-mercatopurine and thioguanine, and the anti-HIV drug 9-(2-phosphonylmethoxyethyl)adenine. This protein may be involved in resistance to thiopurines in acute lymphoblastic leukemia and antiretroviral nucleoside analogs in HIV-infected patients. Alternative splicing of this gene has been detected; however, the complete sequence and translation initiation site is unclear. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

11 in total
7 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus

Additional location(s)

Vesicles, Cell Junctions 

Staining summary

Staining of nucleus in all three cell lines, with additional staining of vesicles and cell junctions in MCF-7.

Reliability (Single)

Antibodies in assay

HPA052295
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Moderate cytoplasmic positivity was displayed in germinal center cells, placental trophoblastic cells and heart myocytes. Smooth muscle cells were strongly stained. Strong membranous and cytoplasmic staining was exhibited in renal tubules. Remaining normal tissues were weakly stained or generally negative.

Tissue specificity

Staining in 20 out of 79 cell types

Reliability (Single)

Antibodies in assay

HPA052295
 

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 2
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 6% of the cancers

Antibodies in assay

HPA052295
 

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

HPA052295

HPA052295

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA052295 pAb