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GENE AND PROTEIN SUMMARY

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Gene name

POLR2J3

Description

polymerase (RNA) II (DNA directed) polypeptide J3

Protein class

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

Protein evidence

Medium

Entrez gene summary

This gene is a member of the RNA polymerase II subunit 11 gene family, which includes three genes in a cluster on chromosome 7q22.1 and a pseudogene on chromosome 7p13. The founding member of this family, DNA directed RNA polymerase II polypeptide J, has been shown to encode a subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. This locus produces multiple, alternatively spliced transcripts that potentially express isoforms with distinct C-termini compared to DNA directed RNA polymerase II polypeptide J. Most or all variants are spliced to include additional non-coding exons at the 3' end which makes them candidates for nonsense-mediated decay (NMD). Consequently, it is not known if this locus expresses a protein or proteins in vivo. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

11 in total
1 with predicted TM region
1 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus but not nucleoli

Additional location(s)

 

Staining summary

Staining of nucleus in A-431 and U-251 MG.

Reliability (Selected)

Antibodies in assay

HPA011403, HPA042997, HPA046970
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Nuclear or cytoplasmic expression in selected tissues. Caution: Based on antibodies targeting proteins from multiple genes.

Tissue specificity

Expressed in 28 out of 78 cell types

Reliability (APE)

Very low

Antibodies in assay

HPA011403, HPA042997, HPA044010, HPA046970
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 11
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 1
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 8% of the cancers

Antibodies in assay

HPA011403, HPA042997, HPA044010, HPA046970
 

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

HPA011403

HPA042997

HPA044010

HPA046970

HPA011403

HPA042997

HPA046970

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

Also mapped to

HPA044010 pAb
POLR2J (100%), POLR2J2 (100%), RP11-577H5.5 (100%)
HPA046970 pAb
POLR2J (100%), POLR2J2 (97%), RP11-577H5.5 (97%)
HPA011403 pAb
UPK3BL (99%), UPK3BL (99%)
HPA042997 pAb
POLR2J2 (100%)