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GENE AND PROTEIN SUMMARY

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Gene name

ABCC2

Description

ATP-binding cassette, sub-family C (CFTR/MRP), member 2

Protein class

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

Protein evidence

High

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 is expressed in the canalicular (apical) part of the hepatocyte and functions in biliary transport. Substrates include anticancer drugs such as vinblastine; therefore, this protein appears to contribute to drug resistance in mammalian cells. Several different mutations in this gene have been observed in patients with Dubin-Johnson syndrome (DJS), an autosomal recessive disorder characterized by conjugated hyperbilirubinemia. [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)

Cytoskeleton (Microtubules)

Additional location(s)

Vesicles 

Staining summary

Granular staining of cytoskeleton (microtubules) in all three cell lines with additional staining of vesicles in U-2 OS.

Reliability (Single)

Antibodies in assay

HPA004860
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

High membranous staining in liver, kidney and gall bladder.

Tissue specificity

Expressed in 14 out of 81 cell types

Reliability (APE)

High

Antibodies in assay

HPA004860, CAB037271
 

Organ

No of cell types

Protein expression

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 14
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 47% of the cancers

Antibodies in assay

HPA004860, CAB037271
 

Tissue

Cancer staining

Protein
expression of
normal tissue

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

Tissue

Cancer staining

Protein
expression of
normal tissue

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

HPA004860

HPA004860

A-431 Skin Low
Moderate
A-549 Lung High
CACO-2 Colon High
HEK 293 Embryonal kidney Low
HeLa Cervix Low
Hep-G2 Liver High
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 Low
Moderate

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB037271 msAb
HPA004860 pAb