NP_000116.2
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NCBI GenBank Nucleotide #
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
35,547 Da
NCBI Official Full Name
estrogen receptor isoform 1
NCBI Official Synonym Full Names
estrogen receptor 1
NCBI Official Synonym Symbols
ER; ESR; Era; ESRA; ESTRR; NR3A1 [Similar Products]
NCBI Protein Information
estrogen receptor
UniProt Protein Name
Estrogen receptor
UniProt Synonym Protein Names
ER-alpha; Estradiol receptor; Nuclear receptor subfamily 3 group A member 1
UniProt Synonym Gene Names
NCBI Summary for ESR1
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 promoter usage and alternative splicing result in dozens of transcript variants, but the full-length nature of many of these variants has not been determined. [provided by RefSeq, Mar 2014]
UniProt Comments for ESR1
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.
Research Articles on ESR1
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Products associated with anti-ESR1 antibody
Pathways associated with anti-ESR1 antibody
Diseases associated with anti-ESR1 antibody
Organs/Tissues associated with anti-ESR1 antibody
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