Human PD-1 / PDCD1 Protein, His Tag (MALS verified)
分子别名(Synonym)
PDCD1, PD1, CD279, SLEB2
表达区间及表达系统(Source)
Human PD-1, His Tag (PD1-H5221) is expressed from human 293 cells (HEK293). It contains AA Leu 25 - Gln 167 (Accession # NP_005009.2).
Predicted N-terminus: Leu 25
蛋白结构(Molecular Characterization)

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 16.8 kDa. The protein migrates as 33-38 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素(Endotoxin)
Less than 1.0 EU per μg by the LAL method / rFC method.
纯度(Purity)
>95% 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 24 months in lyophilized state;
-70°C for 12 months under sterile conditions after reconstitution.




背景介绍
程序性死亡蛋白1(PD-1,亦称CD279或PDCD1)是一种I型跨膜蛋白,属于T细胞调节因子CD28/CTLA-4扩展家族成员。该蛋白表达于活化T细胞、B细胞、巨噬细胞、髓系细胞及部分胸腺细胞表面。PD-1拥有两个B7家族配体PD-L1与PD-L2:PD-L1在几乎所有小鼠肿瘤细胞系(包括经IFN-γ处理的PA1骨髓瘤、P815肥大细胞瘤及B16黑色素瘤)中均有表达;PD-L2表达范围较窄,主要存在于树突状细胞(DCs)及少数肿瘤细胞系。PD-1通过抑制PI3K/AKT通路活化与信号转导,进而阻遏T细胞增殖及IL-1、IL-4、IL-10和IFN-γ等细胞因子的产生。此外,PD-1共交联作用可通过关键信号转导分子去磷酸化抑制BCR介导的信号传导。体外实验证实,用PD-L1-Ig融合蛋白处理抗CD3抗体刺激的T细胞可降低其增殖能力与IFN-γ分泌水平。目前基于增强免疫系统原理的PD-1靶向单克隆抗体正被开发用于癌症治疗。
关键字: PD-1;PD-1蛋白;PD-1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。