Estrogen Receptor alpha Monoclonal Antibody (tbykt), eBioscience™, Invitrogen™

Mouse Monoclonal Antibody

Catalog Number	Mfr. No.	Quantity
50-112-2808	Invitrogen 14974082	100 μg

Description

Description: The tbykt monoclonal antibody reacts with the human Estrogen Receptor alpha (ERa) molecule. Estrogen receptor is a member of the superfamily of nuclear receptors, which are ligand-dependent transcription factors. The human estrogen receptor becomes activated following the binding of estrogen, causing a dissociation of the chaperone protein (Hsp90) and dimerization with either ERa or ERb. The alpha and beta receptors share some homology within their DNA- and ligand- binding domains, but signal in different ways and play different roles in gene regulation. Following activation, Era can directly bind to DNA through EREs (estrogen response elements) or through a more indirect pathway by binding to other transcription factors (Sp1, AP-1, NF-kB, FoxA1 and others). Era binding to DNA can either upregulate or repress gene expression. The alpha receptor has been implicated in the development and progression of breast cancer and its presence is indicative of improved survival and a better response to endocrine therapy (anti-estrogen therapy- tamoxifen). Applications Reported: This tbykt antibody has been reported for use western blotting, immunohistochemical staining, immunocytochemistry, and immunohistochemical staining of formalin-fixed paraffin embedded tissue sections.

Estrogen Receptors (ER) are members of the steroid/thyroid hormone receptor superfamily of nuclear receptors. The estrogen receptor is a ligand-activated transcription factor, that when bound to estrogen hormone, induces a conformational change that allows dimerization and binding to estrogen response elements (ERE) in DNA. When bound to EREs, ER can positively or negatively regulate gene transcription through the recruitment of coactivator or corepressor proteins. There are two different forms of the estrogen receptor, alpha and beta, encoded by separate genes (ESR1 and ESR2, respectively). Due to alternative RNA splicing, at least 4 estrogen receptor-alpha isoforms are known to exist (Isoform 1 (66 kDa), Isoform 2 (53 kDa), Isoform 3 (47 kDa), Isoform 4 (35 kDa)). Estrogen receptors are widely expressed in different tissue types and are essential for sexual development and reproductive function. They also play a role in other tissues such as bone. Estrogen receptors are involved in pathological processes including breast cancer, endometrial cancer, and osteoporosis.

Specifications

• Antigen: Estrogen Receptor alpha
• Classification: Monoclonal
• Form: Liquid
• Regulatory Status: RUO
• Formulation: PBS with 0.09% sodium azide; pH 7.2
• Gene ID (Entrez): 2099
• Isotype: IgG1 κ
• Purification Method: Affinity chromatography
• Gene: ESR1

• Clone: tbykt
• Conjugate: Unconjugated
• Host Species: Mouse
• Target Species: Human
• Gene Accession No.: P03372
• Gene Symbols: ESR1
• Primary or Secondary: Primary
• Product Type: Antibody

For Research Use Only.