> 95% as determined by Tris-Bis PAGE,> 95% as determined by HPLC
过滤
0.22 μm filtered
内毒素水平
Less than 1EU per μg by the LAL method.
Biological Activity Comment
Immobilized Human IL-18 at 5μg/ml (100μl/Well) on the plate. Dose response curve for Human IL-18BP, hFc Tag with the EC50 of 18.2ng/ml determined by ELISA. The affinity constant of 1.21nM as determined in SPR assay (Biacore T200). See testing image for detail.
IL18
宿主: 人
宿主: 人细胞
Recombinant
> 95 % as determined by reducing SDS-PAGE.
限制
仅限研究用
状态
Lyophilized
溶解方式
Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/mL is recommended (usually we use 1 mg/mL solution for lyophilization). Dissolve the lyophilized protein in distilled water.
缓冲液
Lyophilized from 0.22μm filtered solution in PBS ( pH 7.4). Normally 5 % trehalose is added as protectant before lyophilization.
储存条件
4 °C,-80 °C
储存方法
Reconstituted protein stable at -80°C for 12 months, 4°C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
IL-18, IL18, IGIF, IL-1F4, IL-1 gamma, IL1F4, IL-1g, Interleukin 1,Interleukin (IL)-18 was originally discovered as a factor that enhanced IFN-γ production from anti-CD3-stimulated Th1 cells, especially in the presence of IL-12. Upon stimulation with Ag plus IL-12, naive T cells develop into IL-18 receptor (IL-18R) expressing Th1 cells, which increase IFN-γ production in response to IL-18 stimulation.