Biotinylated Human CD40 Ligand / TNFSF5 Protein, Avitag?,His,Flag Tag, active trimer (MALS verified)
分子別名(Synonym)
CD40LG, CD154, CD40L, HIGM1, IGM, IMD3, T-BAM, TNFSF5, TRAP, gp39
表達區(qū)間及表達系統(tǒng)(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
蛋白結構(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.
標記(Labeling)
Biotinylation of this product is performed using Avitag? technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
蛋白標記度(Protein Ratio)
Passed as determined by the HABA assay / binding ELISA.
純度(Purity)
>95% as determined by SDS-PAGE.
>95% as determined by SEC-MALS.
制劑(Formulation)
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重構方法(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.
存儲(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.


背景介紹
CD40配體(亦稱CD40L、CD154、TNFSF5、T細胞抗原Gp39)是一種單次跨膜的II型膜蛋白,屬于腫瘤壞死因子超家族成員。該蛋白主要表達于活化的CD4+T淋巴細胞,同時也存在于血小板、肥大細胞、巨噬細胞、嗜堿性粒細胞、NK細胞、B淋巴細胞等免疫細胞,以及非造血細胞(如平滑肌細胞、內(nèi)皮細胞和上皮細胞)。雖然可溶性CD40配體的單體、二聚體和三聚體形式均能與CD40結合,但三聚體形式通過誘導細胞表面CD40發(fā)生寡聚化(此為TNF受體家族共同特征)而具有最強的生物活性。
CD40配體與抗原呈遞細胞表面的CD40結合后,會根據(jù)靶細胞類型產(chǎn)生不同效應。總體而言,作為共刺激分子,CD40配體在T細胞受體通過MHC分子接受抗原刺激的同時,協(xié)同誘導抗原呈遞細胞活化。該配體共有三個結合受體:CD40、α5β1整合素與αIIbβ3。它通過結合B細胞表面的CD40來調控B細胞功能,若該基因發(fā)生缺陷將導致免疫球蛋白類別轉換障礙,并與高IgM綜合征的發(fā)病密切相關。
關鍵字: CD40 Ligand;CD40 Ligand蛋白;TNFSF5重組蛋白;ACRO;百普賽斯;
百普賽斯集團ACROBiosystems Group(股票代碼:301080)是成立于2010年的跨國生物科技公司,是為全球生物醫(yī)藥、健康產(chǎn)業(yè)領域提供關鍵生物試劑產(chǎn)品及解決方案的行業(yè)平臺型基石企業(yè)。2021年在創(chuàng)業(yè)板上市。百普賽斯集團業(yè)務遍布全球,橫跨亞洲、北美洲、歐洲,在中國、美國、瑞士等12個城市設有辦公室、研發(fā)中心及生產(chǎn)基地。目前累計服務客戶超6000家,與全球Top 20醫(yī)藥企業(yè)均建立了長期、穩(wěn)定的合作伙伴關系。集團旗下?lián)碛衅放艫CROBiosystems百普賽斯、bioSeedin柏思薈、Condense Capital墾拓資本和ACRODiagnostics百斯醫(yī)學等。