> 95 % as determined by Tris-Bis PAGE,> 95 % as determined by HPLC
产品特性
AA 37-193
原理
Human IL-18 Protein
序列
Tyr37-Asp193
产品特性
Recombinant Human IL-18 Protein is expressed from E.coli without tag.It contains Tyr37-Asp193.
过滤
0.22 μm filtered
内毒素水平
Less than 0.02 EU 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: 大肠杆菌(E. Coli)
Recombinant
> 95 % as determined by reducing SDS-PAGE.
限制
仅限研究用
状态
Lyophilized
溶解方式
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/mL is recommended. Dissolve the lyophilized protein in distilled water.
缓冲液
Lyophilized from 0.22μm filtered solution in 20 mM PB, 250 mM NaCl, 50 mM L-arginine ( pH 7.4). Normally 8 % trehalose is added as protectant before lyophilization.
储存条件
-20 °C,-80 °C
储存方法
-20 to -80°C for 12 months as supplied from date of receipt.,-80°C for 3-6 months after reconstitution.,2-8°C for 2-7 days after reconstitution.,Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
有效期
12 months
抗原
IL-18 (IL18)
(Interleukin 18 (IL18))
别名
IL-18
背景
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.