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GENE AND PROTEIN SUMMARY

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Gene name

PROM1

Description

prominin 1

Protein class

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

Protein evidence

Medium

Entrez gene summary

This gene encodes a pentaspan transmembrane glycoprotein. The protein localizes to membrane protrusions and is often expressed on adult stem cells, where it is thought to function in maintaining stem cell properties by suppressing differentiation. Mutations in this gene have been shown to result in retinitis pigmentosa and Stargardt disease. Expression of this gene is also associated with several types of cancer. This gene is expressed from at least five alternative promoters that are expressed in a tissue-dependent manner. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

13 in total
9 with predicted TM region
10 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Cytoplasm, Centrosome

Additional location(s)

 

Staining summary

Localizes to the centrosome and cytoplasm.

Reliability (APE)

Very low

Antibodies in assay

HPA004922, CAB011525
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Expression in luminal membranes of glandular epithelia.

Tissue specificity

Expressed in 27 out of 82 cell types

Reliability (APE)

Medium

Antibodies in assay

HPA004922, CAB011525, HPA031053
 

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 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 57% of the cancers

Antibodies in assay

HPA004922, CAB011525, HPA031053
 

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

HPA004922

CAB011525

HPA031053

HPA004922

CAB011525

A-431 Skin Not detected
NegativeModerate
A-549 Lung Not detected
CACO-2 Colon High
HEK 293 Embryonal kidney Not detected
HeLa Cervix Low
Hep-G2 Liver Low
MCF-7 Pleural effusion Not detected
PC-3 Bone marrow Not detected
RT-4 Urinary bladder Not detected
U-2 OS Bone Low
NegativeWeak
U-251 MG Brain Not detected
NegativeNegative

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA004922 pAb
CAB011525 msAb
HPA031053 pAb