{"product_id":"anti-er-alpha-esr1-rabbit-monoclonal-antibody-bha21008356","title":"Anti-ER alpha ESR1 Rabbit Monoclonal Antibody","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eThis product is an anti-ESR1 antibody for target detection and characterization. Key identifiers include host species: Rabbit; Monoclonal; clone IE-5; isotype Rabbit IgG; reactivity: Human,Mouse,Rat. Reported application contexts include WB, IHC, ICC, IF, Flow (as provided in the source record). Boster Bio Anti-ER alpha ESR1 Rabbit Monoclonal Antibody catalog # M00057-2. Tested in WB, IHC, ICC\/IF, Flow Cytometry applications. This antibody reacts with Human, Mouse, Rat.\u003c\/p\u003e \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e ESR1 (Estrogen receptor).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAntibody format:\u003c\/strong\u003e Monoclonal; clone IE-5; isotype Rabbit IgG.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHost:\u003c\/strong\u003e Rabbit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecies reactivity:\u003c\/strong\u003e Human,Mouse,Rat (confirm in your model system with appropriate controls).\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis description is intended to help interpret the antibody design and the biological context of the target using the fields provided in the catalog record, alongside general experimental considerations.\u003c\/p\u003e \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003eESR1 (protein: P2X purinoceptor 1) is a commonly studied target in molecular and cellular biology. Functional context (as provided): 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 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. . Reported cellular localization context: Isoform 1: Nucleus . Cytoplasm . Cell membrane ; Peripheral membrane protein ; Cytoplasmic side . A minor fraction is associated with the inner membrane. Tissue expression notes (as provided): Widely expressed. Isoform 3 is not expressed in the pituitary gland. .\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eResearch context keywords from the source record include: Cancer,2339,Endocrine System,Epigenetics and Nuclear Signaling,Neuroscience,Nuclear Hormone Receptors,Nuclear Receptors,Nuclear Signaling,Nuclear Signaling Pathways,Signal Transduction,Signaling Pathway.\u003c\/li\u003e\n\u003cli\u003eCurrent studies often focus on connecting target abundance\/localization to pathway perturbations across models, tissues, and cell states.\u003c\/li\u003e\n\u003cli\u003eQuantitative and multiplexed assays (e.g., imaging + immunoblot panels) are commonly used to compare phenotypes across conditions and time-courses.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCommon research applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eWestern blotting (WB):\u003c\/strong\u003e assess relative target abundance across samples, treatments, or time-points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunohistochemistry (IHC):\u003c\/strong\u003e evaluate spatial distribution of target-positive staining in tissue architecture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunofluorescence\/ICC (IF\/ICC):\u003c\/strong\u003e visualize subcellular localization patterns and cell-to-cell heterogeneity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow cytometry:\u003c\/strong\u003e quantify target-positive populations and compare shifts in marker distributions.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWorkflow ideas (metafield): Validate ESR1 antibody specificity using KO\/KD control samples (WB\/IF\/IHC as appropriate), Detect ESR1 expression by Western blot in cell or tissue lysates, Detect ESR1 in FFPE tissue sections by immunohistochemistry, Localize ESR1 by immunofluorescence\/immunocytochemistry in cultured cells, Quantify ESR1-positive cells by flow cytometry in single-cell suspensions\u003c\/p\u003e \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eConsider isoforms and post-translational modifications (PTMs) that may shift apparent molecular weight or epitope accessibility.\u003c\/li\u003e\n\u003cli\u003eApparent molecular weight may vary by sample type and processing (observed MW: 82 kDa; calculated MW: 66216 MW).\u003c\/li\u003e\n\u003cli\u003eControl concepts: include appropriate negative controls (e.g., isotype, KO\/KD samples) and orthogonal validation when feasible.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eAdditional product details (from the source record)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular weight (observed):\u003c\/strong\u003e 82 kDa\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCellular localization (provided):\u003c\/strong\u003e Isoform 1: Nucleus . Cytoplasm . Cell membrane ; Peripheral membrane protein ; Cytoplasmic side . A minor fraction is associated with the inner membrane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTissue details (provided):\u003c\/strong\u003e Widely expressed. Isoform 3 is not expressed in the pituitary gland. .\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!-- Sources (internal): - Antibodies — a laboratory manual overview — Cold Spring Harbor Protocols — https:\/\/cshprotocols.cshlp.org\/ - UniProt Knowledgebase — UniProt — https:\/\/www.uniprot.org\/ - NCBI Gene — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/gene\/ - Antibody validation and reproducibility — Nature methods (collections) — https:\/\/www.nature.com\/collections\/ - Immunohistochemistry\/Immunofluorescence basics — NIH \/ NCBI Bookshelf — https:\/\/www.ncbi.nlm.nih.gov\/books\/ --\u003e","brand":"Boster Bio","offers":[{"title":"100 uL\/vial \/ Unconjugated","offer_id":53071934652781,"sku":"M00057-2","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/m00057-2-wb7.jpg?v=1772618328","url":"https:\/\/www.ebiohippo.com\/products\/anti-er-alpha-esr1-rabbit-monoclonal-antibody-bha21008356","provider":"BioHippo","version":"1.0","type":"link"}