| 货号 | AB-236-NA |
| 别名 | beta-urogastrone; epidermal growth factor (beta-urogastrone); epidermal growth factor; HOMG4; pro-epidermal growth factor; URG; Urogastrone | 全称 | Epidermal Growth Factor |
| 反应种属 | Human |
| 应用 | Western Blot(1 µg/mL) |
| 目标/特异性 | Detects human EGF in direct ELISAs and Western blots. In direct ELISAs, approximately 30% cross-reactivity with recombinant rat EGF and approximately 15% cross-reactivity with recombinant mouse EGF is observed. Does not neutralize the biological activity of recombinant human TGF-alpha. |
| 使用方法 | Western Blot: 1 µg/mL Neutralization: Measured by its ability to neutralize EGF-induced proliferation in the Balb/3T3 mouse embryonic fibroblast cell line. The Neutralization Dose (ND50) is typically 1-3 µg/mL in the presence of 2 ng/mL Recombinant Human EGF. |
| 来源 | Polyclonal Goat IgG |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 1950 (Human); 13645 (Mouse); 25313 (Rat) |
| 纯化方式 | Protein A or G purified |
| 免疫原 | E. coli-derived recombinant human EGF Asn971-Arg1023 Accession # P01133 |
| 内毒素水平 | <0.10 EU per 1 μg of the antibody by the LAL method. |
| 生物活性 | Human |
| 标记 | Unconjugated |
| 溶解方法 | Reconstitute at 1 mg/mL in sterile PBS. |
| 背景 | Epidermal growth factor (EGF) is the founding member of the EGF family that also includes TGF-alpha, amphiregulin (AR), betacellulin (BTC), epiregulin (EPR), heparin-binding EGF-like growth factor (HB‑EGF), epigen, and the neuregulins (NRG)-1 through -6 (1). Members of the EGF family share a structural motif, the EGF-like domain, which is characterized by three intramolecular disulfide bonds that are formed by six similarly spaced conserved cysteine residues (2). All EGF family members are synthesized as type I transmembrane precursor proteins that may contain several EGF domains in the extracellular region. The mature proteins are released from the cell surface by regulated proteolysis (1). The 1207 amino acid (aa) human EGF precursor contains nine EGF domains and nine LDLR class B repeats. The mature protein consists of 53 aa and is generated by proteolytic excision of the EGF domain proximal to the transmembrane region (3). Mature human EGF shares 70% aa sequence identity with mature mouse and rat EGF. EGF is present in various body fluids, including blood, milk, urine, saliva, seminal fluid, pancreatic juice, cerebrospinal fluid, and amniotic fluid (4). Four ErbB (HER) family receptor tyrosine kinases including EGFR/ErbB1, ErbB2, ErbB3 and ErbB4, mediate responses to EGF family members (5). These receptors undergo a complex pattern of ligand induced homo- or hetero-dimerization to transduce EGF family signals (6, 7). EGF binds ErbB1 and depending on the context, induces the formation of homodimers or heterodimers containing ErbB2. Dimerization results in autophosphorylation of the receptor at specific tyrosine residues to create docking sites for a variety of signaling molecules (5, 8). Biological activities ascribed to EGF include epithelial development, angiogenesis, inhibition of gastric acid secretion, fibroblast proliferation, and colony formation of epidermal cells in culture. |
| 运输条件 | Blue Ice |
| 存放说明 | -20℃ |
| 参考文献 |
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Cell Proliferation Induced by EGF and Neutralization by Human EGF Antibody. Recombinant Human EGF (Catalog # 236-EG) stimulates proliferation in the Balb/3T3 mouse embryonic fibroblast cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human EGF (2 ng/mL) is neutralized (green line) by increasing concentrations of Human EGF Polyclonal Antibody (Catalog # AB-236-NA). The ND50 is typically 1-3 µg/mL. |
