Estrogen Receptor-α (Ab-537) Antibody

Catalog Number:

33133

Amount:

100μg

Price:

$319

Swiss-Prot No:

Swiss-Prot: P03372
NCBI Gene ID: 2099

Form of Antibody:

Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.

Storage/Stability:

Immunogen:

Synthesized non-phosphopeptide derived from human Estrogen Receptor-α around the phosphorylation site of tyrosine 537 (P-L-Y(p)-D-L).

Purification:

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.

Specificity/Sensitivity:

The antibody detects endogenous levels of total Estrogen Receptor-α protein.

Applications:

WB IHC

Background:

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. Isoform 3 can bind to ERE and inhibit isoform 1.

Sehime Temel, Endocrinology, Oct 2002; 143: 3974.
Xin-Tian Zhang, AACR Meeting Abstracts, Apr 2005; 2005: 302.
Suwit J. Somponpun, Am J Physiol Regulatory Integrative Comp Physiol, Sep 2004; 287: R661 - R669.

References:

appl_detail:

Western blotting: 1:500~1:3000
Immunohistochemistry: 1:50~1:100

Datasheet PDF