Biotinylated Human PD-L1 / B7-H1 (19-134) Protein, His,Avitag™ (recommended for biopanning) (MALS verified)
分子别名（Synonym）
PD-L1,CD274,B7-H1,PDCD1L1,PDCD1LG1
表达区间及表达系统（Source）
Biotinylated Human PD-L1 (19-134), His,Avitag (PDL-H82E4) is expressed from human 293 cells (HEK293). It contains AA Phe 19 - Tyr 134 (Accession # Q9NZQ7-1).
Predicted N-terminus: Phe 19
蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 16.9 kDa. The protein migrates as 19 kDa and 21 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
标记（Labeling）
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
蛋白标记度（Protein Ratio）
Passed as determined by the HABA assay / binding ELISA.
应用说明（Application）
PDL-H82E4 works best for experiments that test the binding between PD-L1 and candidate antibodies, such as biopanning and other relevant assays.
This product is NOT suitable for testing PD1-PDL1 binding. For this type of application, we strongly recommend you to choose PD1-H82F3 as an alternative.
纯度（Purity）
>90% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（Reconstitution）
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储（Storage）
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
背景介绍
程序性死亡配体1（PDL1）亦称B7-H、B7H1、MGC142294、MGC142296、PD-L1、PDCD1L1及PDCD1LG1，是B7免疫分子家族的重要成员，参与细胞免疫与体液免疫的调控。PDL1是一种细胞表面免疫球蛋白超家族蛋白，其胞外区包含两个Ig样结构域，并具有短胞质结构域。该蛋白广泛表达于大多数外周组织及造血细胞中。PDL1与CD28分子家族受体之间的相互作用，通过提供刺激性和抑制性双重信号来调控T细胞活化与免疫耐受。PDL1可能通过诱导细胞凋亡和阻滞细胞周期进程来抑制持续性的T细胞免疫应答。
关键字： PD-L1;PD-L1蛋白;PD-L1重组蛋白;ACRO;百普赛斯;
百普赛斯集团ACROBiosystems Group（股票代码：301080）是成立于2010年的跨国生物科技公司，是为全球生物医药、健康产业领域提供关键生物试剂产品及解决方案的行业平台型基石企业。2021年在创业板上市。百普赛斯集团业务遍布全球，横跨亚洲、北美洲、欧洲，在中国、美国、瑞士等12个城市设有办公室、研发中心及生产基地。目前累计服务客户超6000家，与全球Top 20医药企业均建立了长期、稳定的合作伙伴关系。集团旗下拥有品牌ACROBiosystems百普赛斯、bioSeedin柏思荟、Condense Capital垦拓资本和ACRODiagnostics百斯医学等。