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GENE AND PROTEIN SUMMARY

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Gene name

MEP1B

Description

meprin A, beta

Protein class

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

Protein evidence

Medium

Entrez gene summary

Meprins are multidomain zinc metalloproteases that are highly expressed in mammalian kidney and intestinal brush border membranes, and in leukocytes and certain cancer cells. They are involved in the hydrolysis of a variety of peptide and protein substrates, and have been implicated in cancer and intestinal inflammation. Mature meprins are oligomers of evolutionarily related, but separately encoded alpha and/or beta subunits. Homooligomers of alpha subunit are secreted, whereas, oligomers containing the beta subunit are plasma membrane-bound. This gene encodes the beta subunit. Targeted disruption of this gene in mice affects embryonic viability, renal gene expression profiles, and distribution of the membrane-associated alpha subunit in kidney and intestine. [provided by RefSeq, Oct 2011]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Pending subcellular analysis

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Strong cytoplasmic positivity was observed in superficial cells of the intestine and parathyroid glands. Bile duct cells, pancreatic ducts, cells in seminiferous ducts and seminal vesicle showed strong membranous staining. The remaining normal tissues were weakly stained or negative.

Tissue specificity

Staining in 48 out of 80 cell types

Reliability (Single)

Antibodies in assay

CAB025850
 

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 13
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 28% of the cancers

Antibodies in assay

CAB025850
 

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

A-431 Skin Not detected

-

-

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 Low

-

-

U-251 MG Brain Not detected

-

-

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB025850 mAb