纯度

> 97 % as determined by SDS-PAGE

内毒素

Please contact us for more information.

生物活性

Measured in a cytotoxicity assay using L929 mouse fibrosarcoma cells in the presence of the metabolic inhibitor actinomycin D. The ED₅₀ for this effect is typically 2-10 pg/mL.

蛋白构建

A DNA sequence encoding the mature form of human TNFβ (P01374) (Leu 35-Leu 205) was expressed and purified, with an initial Met at the N-terminus.

Uniprot No.

表达宿主

E. coli

种属

Human

预测 N 端

Met

分子量

The recombinant human TNFβ comprises 172 amino acids and predicts a molecular mass of 18.8 kDa as estimated in SDS-PAGE under reducing conditions.

缓冲液

Lyophilized from sterile 50mM Tris, pH 8.0
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.

运输方式

In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.

稳定性 & 储存条件

Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

复溶

A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.