Biotinylated Human 4-1BB / TNFRSF9 Protein, His,Avitag?(MALS verified)
分子別名(Synonym)
TNFRSF9,4-1BB,CD137,CDw137,ILA
表達區(qū)間及表達系統(tǒng)(Source)
Biotinylated Human 4-1BB, His,Avitag (41B-H82E6) is expressed from human 293 cells (HEK293). It contains AA Leu 24 - Gln 186 (Accession # Q07011-1).
Predicted N-terminus: Leu 24
蛋白結(jié)構(gòu)(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 20.9 kDa. The protein migrates as 30-35 kDa when calibrated against Star Ribbon Pre-stained Protein Marker 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.
內(nèi)毒素(Endotoxin)
Less than 1.0 EU per μg by the LAL method.
純度(Purity)
>90% as determined by SDS-PAGE.
>90% 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(gòu)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(Background)
4-1BB也被稱為CD137,腫瘤壞死因子受體超家族成員9(TNFRSF9),由淋巴細胞活化(ILA)誘導(dǎo),是腫瘤壞死因子(TNF)受體超家族的共刺激分子。CD137可以由活化的T細胞表達,但在CD8上的表達程度大于CD4 T細胞。此外,在炎癥部位的樹突細胞、濾泡樹突細胞、自然殺傷細胞、粒細胞和血管壁細胞上發(fā)現(xiàn)了CD137的表達。CD137的最佳特征活性是其對活化T細胞的共刺激活性。CD137的交聯(lián)增強T細胞增殖、IL-2分泌存活和細胞溶解活性。此外,它可以增強免疫活性,消除小鼠的腫瘤。當(dāng)TCR/CD3復(fù)合物結(jié)合時,CD137可以增強活化誘導(dǎo)的T細胞凋亡。此外,4-1BB/4-1BBL共刺激途徑已被證明可以增強對幾種病毒的次級CTL反應(yīng),同時增強抗腫瘤免疫。因此,4-1BB是人類癌癥免疫治療的一種有前景的候選物。CD137已被證明與TRAF2相互作用。
關(guān)鍵字: 4-1BB;4-1BB蛋白;4-1BB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(lǐng)域提供關(guān)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(wù)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(shè)有辦公室、研發(fā)中心及生產(chǎn)基地。目前累計服務(wù)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(guān)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(xué)等。