Biotinylated Human CD40 Ligand / TNFSF5 Protein, Avitag™,His,Flag Tag, active trimer (MALS verified)
分子别名(Synonym)
CD40LG, CD154, CD40L, HIGM1, IGM, IMD3, T-BAM, TNFSF5, TRAP, gp39
表达区间及表达系统(Source)
Biotinylated Human CD40 Ligand Protein, Avitag,His,Flag Tag (CDL-H82Db) is expressed from human 293 cells (HEK293). It contains AA Gly 116 - Leu 261 (Accession # P29965-1).
Predicted N-terminus: Gly
蛋白结构(Molecular Characterization)
This protein carries an Avi tag (Avitag™) at the N-terminus, followed by flag tag. The polyhistidine tag is inserted in-between the Avi tag and Flag tag.
The protein has a calculated MW of 51.6 kDa. The protein migrates as 50-55 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.
纯度(Purity)
>95% as determined by SDS-PAGE.
>95% as determined by SEC-MALS.
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
CD40配体(亦称CD40L、CD154、TNFSF5、T细胞抗原Gp39)是一种单次跨膜的II型膜蛋白,属于肿瘤坏死因子超家族成员。该蛋白主要表达于活化的CD4+T淋巴细胞,同时也存在于血小板、肥大细胞、巨噬细胞、嗜碱性粒细胞、NK细胞、B淋巴细胞等免疫细胞,以及非造血细胞(如平滑肌细胞、内皮细胞和上皮细胞)。虽然可溶性CD40配体的单体、二聚体和三聚体形式均能与CD40结合,但三聚体形式通过诱导细胞表面CD40发生寡聚化(此为TNF受体家族共同特征)而具有最强的生物活性。
CD40配体与抗原呈递细胞表面的CD40结合后,会根据靶细胞类型产生不同效应。总体而言,作为共刺激分子,CD40配体在T细胞受体通过MHC分子接受抗原刺激的同时,协同诱导抗原呈递细胞活化。该配体共有三个结合受体:CD40、α5β1整合素与αIIbβ3。它通过结合B细胞表面的CD40来调控B细胞功能,若该基因发生缺陷将导致免疫球蛋白类别转换障碍,并与高IgM综合征的发病密切相关。
关键字: CD40 Ligand;CD40 Ligand蛋白;TNFSF5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。