级别和纯度: 无动物源?无动物源（Animal Free）—— 不含动物源成分生产，降低污染风险。适用于避免动物源材料的生物制造和培养。无载体?无载体（Carrier Free）—— 不含添加的载体蛋白/稳定剂。当载体（如 BSA）会干扰偶联或敏感检测时使用。生物活性?生物活性级（Bioactive）—— 经验证在功能检测中保持生物活性。当分子须具有功能活性而不仅是纯度时使用。ActiBioPure™?ActiBioPure™ —— 阿拉丁面向生物活性和重组产品的优质系列。当同时需要高纯度和保持生物活性时使用。高性能?高性能级 —— 纯度和性能特性经过优化。适用于普通等级无法满足的灵敏分析。≥95%(SDS-PAGE)expressed in E. coli; 见COA
Accession #
P01375
蛋白标签
No tag
表达系统
E. coli
内毒素水平
<1.0 EU/μg
生物活性
Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D (Catalog # A113142). The ED50 for this effect is typically 0.093 ng/mL.
无动物源,无载体,生物活性,ActiBioPure™,高性能,≥95%(SDS-PAGE),expressed in E. coli; 见COA
生化机理
Tumor necrosis factor alpha (TNF-alpha), also known as TNF, TNFA or TNFSF2, is the prototypic cytokine of the TNF superfamily, and is a multifunctional molecule involved in the regulation of a wide spectrum of biological processes including cell proliferation, differentiation, apoptosis, lipid metabolism, and coagulation. Two receptors, TNF-R1 (TNF receptor type 1; CD120a; p55/60) and TNF-R2 (TNF receptor type 2; CD120b; p75/80), bind to TNF-alpha. TNF-alpha protein is produced mainly by macrophages, and large amounts of this cytokine are released in response to lipopolysaccharide, other bacterial products, and Interleukin-1 (IL-1). TNF-alpha is involved in fighting against the tumorigenesis, thus, is regarded as a molecular insight in cancer treatment.
Post-translational: The soluble form derives from the membrane form by proteolytic processing. The membrane-bound form is further proteolytically processed by SPPL2A or SPPL2B through regulated intramembrane proteolysis producing TNF intracellular domains (ICD1 and ICD2) released in the cytosol and TNF C-domain 1 and C-domain 2 secreted into the extracellular space. The membrane form, but not the soluble form, is phosphorylated on serine residues. Dephosphorylation of the membrane form occurs by binding to soluble TNFRSF1A/TNFR1. O-glycosylated; glycans contain galactose, N-acetylgalactosamine and N-acetylneuraminic acid. The soluble form is demyristoylated at Lys-19 and Lys-20 by SIRT6, promoting its secretion.
生物活性
Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D (Catalog # A113142). The ED50 for this effect is typically 0.093 ng/mL.
15.8 kDa, under reducing conditions; 16.0 kDa, under non-reducing conditions
分子类型
蛋白质
产品线
生物产品
储存与运输
物理形态
冻干(Lyophilized)
储存缓冲液
Lyophilized from PBS, pH 7.4
浓度
expressed in E. coli; 见COA
复溶
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute at 0.5 mg/mL in sterile distilled water. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.
储存条件
-20°C储存,避免反复冻融
运输条件
超低温运输
稳定性与储存
-20℃保存 12个月；复溶后建议分装，避免反复冻融。
图片
Recombinant Human TNF-α Protein (rp228949) - Protein Bioactivity
Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D (A113142). The ED₅₀ for this effect is typically 0.093 ng/mL.
Recombinant Human TNF-α Protein (rp228949) - SDS-PAGE
3 μg/lane of Recombinant Human TNF-α Protein was resolved with SDS-PAGE under reducing (R) and non-reducing (N) conditions and visualized by Coomassie® Blue staining, showing a band at 15.8 kDa under reducing conditions and 16.0 kDa under non-reducing conditions.
ZJ26F0435042
危险品化学品经营许可证（带存储）