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GENE AND PROTEIN SUMMARY

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Gene name

ESR1

Description

estrogen receptor 1

Protein class

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

Protein evidence

High

Entrez gene summary

This gene encodes an estrogen receptor, a ligand-activated transcription factor composed of several domains important for hormone binding, DNA binding, and activation of transcription. The protein localizes to the nucleus where it may form a homodimer or a heterodimer with estrogen receptor 2. Estrogen and its receptors are essential for sexual development and reproductive function, but also play a role in other tissues such as bone. Estrogen receptors are also involved in pathological processes including breast cancer, endometrial cancer, and osteoporosis. Alternative splicing results in several transcript variants, which differ in their 5' UTRs and use different promoters. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Plasma membrane, Cytoplasm

Additional location(s)

 

Staining summary

Staining of cytoplasm and plasma membrane in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA000449
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Selective nuclear expression in female genital tissues.

Tissue specificity

Expressed in 10 out of 80 cell types

Reliability (APE)

High

Antibodies in assay

CAB000037, HPA000449, HPA000450
 

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 13
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 19% of the cancers

Antibodies in assay

CAB000037, HPA000449, HPA000450
 

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

CAB000037

HPA000449

HPA000450

HPA000449

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB000037 mAb
HPA000449 pAb
HPA000450 pAb