Mouse anti-Human Estrogen Receptor, alpha Monoclonal Antibody | anti-ESR1 antibody

Estrogen Receptor, alpha, phosphorylated (Ser118) (ER)

Cat. Num. AAA632361

• Gene Names: ESR1; ER; ESR; Era; ESRA; ESTRR; NR3A1
• Reactivity: Human
• Applications: ELISA, Western Blot, Immunohistochemistry
• Purity: Purified; Purified.
• Synonyms: Estrogen Receptor; alpha; Monoclonal Antibody; phosphorylated (Ser118) (ER); Anti -Estrogen Receptor; anti-ESR1 antibody

• Host: Mouse
• Reactivity: Human
• Clonality: Monoclonal
• Isotype: IgG2b
• Clone Number: 3A15
• Specificity: Detects endogenous levels of estrogen receptor alpha only when phosphorylated at Ser118. It does not crossreact with phosphorylated estrogen receptor beta. Species Crossreactivity: Mouse.
• Purity/Purification: Purified; Purified.
• Form/Format: Supplied as liquid in 10mM HEPES, pH 7.5, 150mM sodium chloride, 0.1mg/ml BSA, 50% glycerol. No preservative added.

• Applicable Applications for anti-ESR1 antibody: ELISA (EL/EIA), Western Blot (WB), Immunohistochemistry (IHC)
• Application Notes: Dilution: Western Blotting: 1:1000, incubate membrane with diluted antibody in 5% nonfat dry milk, 1X TBS, 0.1% Tween-20 at 4 degree C with gentle shaking, overnight.; Immunohistochemistry (Paraffin): 1:50
• Immunogen: Synthetic phosphopeptide (KLH coupled) corresponding to residues surrounding Ser118 of human ER alpha.
• Preparation and Storage: May be stored at 4 degree C for short-term only. For long-term storage, store at -20 degree C. Aliquots are stable for at least 12 months at -20 degree C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Western Blot (WB)

(Western blot analysis of extracts from untransfected MCF-7 cells, and COS-1 cells transfected with wild-type or mutant ER alpha, stimulated with EGF and E2, using MBS632361 or control estrogen receptor alpha antibody (lower).)

Immunohistochemistry (IHC)

(Immunohistochemical staining of phosphorylated estrogen receptor alpha in paraffin-embedded human breast carcinoma showing nuclear localization, using MBS632361.)

Related Product Information for anti-ESR1 antibody

Estrogen receptor alpha (ER alpha), a member of the steroid receptor superfamily, contains highly conserved DNA binding (DBD) and ligand binding domains (LBD) (1). Through its estrogen-independent and estrogen-dependent activation domains (AF-1 and AF-2, respectively), ER alpha regulates transcription by recruiting coactivator proteins and interacting with general transcriptional machinery (2). Phosphorylation provides an important mechanism to regulate ER alpha activity (3,4). ER alpha is phosphorylated on multiple sites (5). Serines 104, 106, 118 and 167 are located in the N-terminal transcription activation function domain AF-1, and phosphorylation of these serines plays an important role in regulating ER alpha activity. Ser118 may be the substrate of the transcription regulatory kinase cdk7 (5). Ser167 may be phosphorylated by p90RSK and Akt (4,6). Phosphorylation of Ser167 may confer tamoxifen resistance in breast cancer patients (4).

Product Categories/Family for anti-ESR1 antibody

Antibodies; Abs to Receptors; Estrogen

NCBI and Uniprot Product Information

• NCBI GI #: 62821794
• NCBI GeneID: 2099
• NCBI Accession #: NP_000116.2
• NCBI GenBank Nucleotide #: NM_000125.3
• UniProt Accession #: P03372; Q13511; Q14276; Q5T5H7; Q6MZQ9; Q9NU51; Q9UDZ7; Q9UIS7
• Molecular Weight: 66,216 Da
• NCBI Official Full Name: estrogen receptor
• NCBI Official Synonym Full Names: estrogen receptor 1
• NCBI Official Symbol: ESR1
• NCBI Official Synonym Symbols: ER; ESR; Era; ESRA; ESTRR; NR3A1
• NCBI Protein Information: estrogen receptor; ER-alpha; estradiol receptor; estrogen nuclear receptor alpha; estrogen receptor alpha E1-E2-1-2; estrogen receptor alpha E1-N2-E2-1-2; estrogen receptor alpha delta 4 +49 isoform; nuclear receptor subfamily 3 group A member 1; estrogen receptor alpha 3*,4,5,6,7*/822 isoform; estrogen receptor alpha delta 4*,5,6,7*/654 isoform; estrogen receptor alpha delta 4*,5,6,7,8*/901 isoform; estrogen receptor alpha delta 3*,4,5,6,7*/819-2 isoform; estrogen receptor alpha delta 3*,4,5,6,7*,8*/941 isoform
• UniProt Protein Name: Estrogen receptor
• Protein Family: Estrogen receptor
• UniProt Gene Name: ESR1
• UniProt Synonym Gene Names: ESR; NR3A1; ER
• UniProt Entry Name: ESR1_HUMAN

NCBI Description

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]

Uniprot Description

ER-alpha: a nuclear hormone receptor and transcription factor. Regulates gene expression and affects cellular proliferation and differentiation in target tissues. Two splice-variant isoforms have been described.

Protein type: Nuclear receptor; DNA-binding

Chromosomal Location of Human Ortholog: 6q25.1

Cellular Component: nucleoplasm; Golgi apparatus; membrane; cytoplasm; plasma membrane; integral to membrane; nucleus

Molecular Function: identical protein binding; estrogen receptor activity; zinc ion binding; nitric-oxide synthase regulator activity; beta-catenin binding; estrogen response element binding; transcription factor binding; steroid binding; protein binding; enzyme binding; steroid hormone receptor activity; chromatin binding; transcription factor activity

Biological Process: estrogen receptor signaling pathway; positive regulation of nitric oxide biosynthetic process; signal transduction; uterus development; response to estradiol stimulus; regulation of apoptosis; elevation of cytosolic calcium ion concentration; positive regulation of fibroblast proliferation; regulation of transcription, DNA-dependent; epithelial cell development; steroid hormone receptor signaling pathway; transcription initiation from RNA polymerase II promoter; transcription, DNA-dependent; positive regulation of nitric-oxide synthase activity; negative regulation of transcription factor activity; antral ovarian follicle growth; androgen metabolic process; male gonad development; vagina development; positive regulation of retinoic acid receptor signaling pathway; negative regulation of I-kappaB kinase/NF-kappaB cascade; chromatin remodeling; response to estrogen stimulus; positive regulation of transcription factor activity; positive regulation of transcription from RNA polymerase II promoter; steroid hormone mediated signaling; gene expression; G-protein signaling, coupled to IP3 second messenger (phospholipase C activating)

Disease: Breast Cancer; Migraine With Or Without Aura, Susceptibility To, 1; Myocardial Infarction, Susceptibility To; Estrogen Resistance