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GENE AND PROTEIN SUMMARY

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Gene name

MUC4

Description

mucin 4, cell surface associated

Protein class

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

Protein evidence

High

Entrez gene summary

The major constituents of mucus, the viscous secretion that covers epithelial surfaces such as those in the trachea, colon, and cervix, are highly glycosylated proteins called mucins. These glycoproteins play important roles in the protection of the epithelial cells and have been implicated in epithelial renewal and differentiation. This gene encodes an integral membrane glycoprotein found on the cell surface, although secreted isoforms may exist. At least two dozen transcript variants of this gene have been found, although for many of them the full-length transcript has not been determined or they are found only in tumor tissues. This gene contains a region in the coding sequence which has a variable number (>100) of 48 nt tandem repeats. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

17 in total
4 with predicted TM region
12 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Additional location(s)

 

Staining summary

No staining was observed in any of the three cell lines.

Reliability (Single)

Antibodies in assay

CAB013536
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Cytoplasmic and membranous expression mainly in respiratory epithelia, goblet cells of the gastrointestinal tract as well as glandular cells in cervix and prostate.

Tissue specificity

Expressed in 18 out of 83 cell types

Reliability (APE)

High

Antibodies in assay

HPA005895, CAB013536
 

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 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 15
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 33% of the cancers

Antibodies in assay

HPA005895, CAB013536
 

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

HPA005895

CAB013536

A-431 Skin High
Negative
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 Low
PC-3 Bone marrow Not detected
RT-4 Urinary bladder Not detected
U-2 OS Bone Low
Negative
U-251 MG Brain Not detected
Negative

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB013536 mAb
HPA005895 pAb