Human Estradiol receptor,ER ELISA Kit

Code CSB-E08652h
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Product Type ELISA Kit
Size 96T,5×96T,10×96T
Uniprot No. P03372
Lead Time 3-5 working days
Abbreviation ESR1
Protein Biological Process 1 Transcription/Transcription regulation
Target Name estrogen receptor 1
Alias RP1-130E4.1, DKFZp686N23123, ER, ESR, ESRA, Era, NR3A1, estrogen receptor alpha|estrogen receptor alpha delta 3*,4,5,6,7*/819-2 isoform|estrogen receptor alpha delta 4 +49 isoform|estrogen receptor
Species Homo sapiens (Human)
Protein Biological Process 3 Transcription
Sample Types serum, plasma, tissue homogenates, cell lysates
Detection Range 3.12 pg/mL-200 pg/mL
Sensitivity 0.78 pg/mL
Assay Time 1-5h
Sample Volume 50-100ul
Detection Wavelength 450 nm
Research Area Epigenetics and Nuclear Signaling
Protocol
Protocol may be improved. Please feel free to contact CUSABIO product specialist to obtain the latest version.
Assay Principle quantitative
Measurement Sandwich
Target Details 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.
Precision
Intra-assay Precision (Precision within an assay): CV%<8%        
Three samples of known concentration were tested twenty times on one plate to assess.    
Inter-assay Precision (Precision between assays): CV%<10%        
Three samples of known concentration were tested in twenty assays to assess.      
               
Linearity
To assess the linearity of the assay, samples were spiked with high concentrations of human ER in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.  
  Sample Serum(n=4)    
1:1 Average % 92    
Range % 88-95    
1:2 Average % 95    
Range % 90-100    
1:4 Average % 96    
Range % 90-102    
1:8 Average % 101    
Range % 96-106    
Recovery
The recovery of human ER spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.  
 
Sample Type Average % Recovery Range    
Serum (n=5) 90 87-95    
EDTA plasma (n=4) 95 90-100    
               
               
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.  
 
pg/ml OD1 OD2 Average Corrected    
200 2.634 2.647 2.641 2.451    
100 1.935 1.877 1.906 1.716    
50 1.142 1.236 1.189 0.999    
25 0.736 0.787 0.762 0.572    
12.5 0.447 0.454 0.451 0.261    
6.25 0.311 0.325 0.318 0.128    
3.12 0.240 0.251 0.246 0.056    
0 0.189 0.191 0.190      
    .          
References
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Function Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Ligand-dependent nuclear transactivation involves either direct homodimer binding to a palindromic estrogen response element (ERE) sequence or association with other DNA-binding transcription factors, such as AP-1/c-Jun, c-Fos, ATF-2, Sp1 and Sp3, to mediate ERE-independent signaling. Ligand binding induces a conformational change allowing subsequent or combinatorial association with multiprotein coactivator complexes through LXXLL motifs of their respective components. Mutual transrepression occurs between the estrogen receptor (ER) and NF-kappa-B in a cell-type specific manner. Decreases NF-kappa-B DNA-binding activity and inhibits NF-kappa-B-mediated transcription from the IL6 promoter and displace RELA/p65 and associated coregulators from the promoter. Recruited to the NF-kappa-B response element of the CCL2 and IL8 promoters and can displace CREBBP. Present with NF-kappa-B components RELA/p65 and NFKB1/p50 on ERE sequences. Can also act synergistically with NF-kappa-B to activate transcription involving respective recruitment adjacent response elements; the function involves CREBBP. Can activate the transcriptional activity of TFF1. Also mediates membrane-initiated estrogen signaling involving various kinase cascades. Isoform 3 is involved in activation of NOS3 and endothelial nitric oxide production. Isoforms lacking one or several functional domains are thought to modulate transcriptional activity by competitive ligand or DNA binding and/or heterodimerization with the full-length receptor. Essential for MTA1-mediated transcriptional regulation of BRCA1 and BCAS3. Isoform 3 can bind to ERE and inhibit isoform 1.
Involvement in disease Estrogen resistance (ESTRR)
Subcellular Location Isoform 1: Nucleus, Cytoplasm, Cell membrane, Peripheral membrane protein, Cytoplasmic side, Note=A minor fraction is associated with the inner membrane, SUBCELLULAR LOCATION: Isoform 3: Nucleus, Cytoplasm, Cell membrane, Peripheral membrane protein, Cytoplasmic side, Cell membrane, Single-pass type I membrane protein, Note=Associated with the inner membrane via palmitoylation (Probable), At least a subset exists as a transmembrane protein with a N-terminal extracellular domain, SUBCELLULAR LOCATION: Nucleus, Golgi apparatus, Cell membrane
Protein Families Nuclear hormone receptor family, NR3 subfamily
Tissue Specificity Widely expressed. Isoform 3 is not expressed in the pituitary gland.
Database Links

HGNC: 3467

OMIM: 133430

KEGG: hsa:2099

STRING: 9606.ENSP00000206249

UniGene: Hs.208124

Pathway Estrogen signaling pathway

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