Biotinylated Cynomolgus / Rhesus macaque CTLA-4 Protein, Fc,Avitag? (MALS verified)
分子別名（Synonym）
CTLA4,CD152
表達(dá)區(qū)間及表達(dá)系統(tǒng)（Source）
Biotinylated Cynomolgus / Rhesus macaque CTLA-4 Protein, Fc,Avitag (CT4-C82F3) is expressed from human 293 cells (HEK293). It contains AA Ala 37 - Ser 160 (Accession # G7PL88-1).
Predicted N-terminus: Ala 37
蛋白結(jié)構(gòu)（Molecular Characterization）
This protein carries a human IgG1 Fc tag at the C-terminus, followed by an Avi tag (Avitag?).
The protein has a calculated MW of 41.4 kDa. The protein migrates as 47-55 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
標(biāo)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(biāo)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）
CTLA-4 (Cytotoxic T-Lymphocyte Antigen 4) is also known as CD152 (Cluster of differentiation 152), is a protein receptor that downregulates the immune system. CTLA4 is a member of the immunoglobulin superfamily, which is expressed on the surface of Helper T cells and transmits an inhibitory signal to T cells. The protein contains an extracellular V domain, a transmembrane domain, and a cytoplasmic tail. Alternate splice variants, encoding different isoforms. CTLA4 is similar to the T-cell co-stimulatory protein, CD28, and both molecules bind to CD80 and CD86, also called B7-1 and B7-2 respectively, on antigen-presenting cells. CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Intracellular CTLA4 is also found in regulatory T cells and may be important to their function. Fusion proteins of CTLA4 and antibodies (CTLA4-Ig) have been used in clinical trials for rheumatoid arthritis.
關(guān)鍵字： CTLA-4;CTLA-4蛋白;CTLA-4重組蛋白;ACRO;百普賽斯;
百普賽斯集團(tuán)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(tuán)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(jì)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(tuán)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。