Recombinant Cynomolgus/Rhesus macaque PD-L1/B7-H1 Protein is expressed from HEK293 with His tag at the C-Terminus.It contains Phe19-Arg238.
纯度
> 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 Cynomolgus PD-L1, His Tag at 0.5μg/ml (100μl/Well) on the plate. Dose response curve for Anti-PD-L1 Antibody, hFc Tag with the EC50 of 4.1ng/ml determined by ELISA. The affinity constant of 1.28 μM as determined in SPR assay (Biacore T200). See testing image for detail.
PD-L1
宿主: 小鼠
宿主: HEK-293 Cells
Recombinant
> 95 % as determined by Tris-Bis PAGE,> 95 % as determined by HPLC
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 PBS ( 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.
B7-H1, also known as PD-L1 and CD274, is an approximately 65 kDa transmembrane glycoprotein in the B7 family of immune regulatory molecules. PD-L1 has been identified as the ligand for the immunoinhibitory receptor programmed death-1(PD1/PDCD1) and has been demonstrated to play a role in the regulation of immune responses and peripheral tolerance.
分子量
26 kDa. Due to glycosylation, the protein migrates to 35-45 kDa based on Tris-Bis PAGE result.