Human IL-2 Protein, Tag Free (MALS verified)
分子別名(Synonym)
IL2,TCGF,lymphokine,Interleukin 2
表達區(qū)間及表達系統(tǒng)(Source)
Human IL-2 Protein, Tag Free (IL2-H5215) is expressed from human 293 cells (HEK293). It contains AA Ala 21 - Thr 153 (Accession # P60568-1).
Predicted N-terminus: Ala 21
蛋白結(jié)構(gòu)(Molecular Characterization)

This protein carries no "tag".
The protein has a calculated MW of 15.4 kDa. The protein migrates as 14 kDa and 16-17 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
內(nèi)毒素(Endotoxin)
Less than 0.01 EU per μg by the LAL method.
宿主蛋白殘留(Host Cell Protein)
<0.5 ng/μg of protein tested by ELISA.
宿主核酸殘留(Host Cell DNA)
<0.02 ng/μg of protein tested by qPCR.
無菌(Sterility)
Negative
支原體(Mycoplasma)
Negative.
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(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)
白細胞介素-2(IL-2)是一種白細胞介素,一種細胞因子免疫系統(tǒng)信號分子,是一種白細胞營養(yǎng)激素,有助于身體對微生物感染的自然反應(yīng),并區(qū)分外來(非自我)和自我。IL-2通過與負責(zé)免疫的淋巴細胞表達的IL-2受體結(jié)合來介導(dǎo)其作用。成熟的人IL-2分別與小鼠和大鼠IL-2具有56%和66%的氨基酸序列同一性。人和小鼠IL-2表現(xiàn)出跨物種活性。IL-2受體由三個亞基組成,這些亞基以不同的預(yù)先形成的復(fù)合物存在于細胞表面。在胸腺T細胞發(fā)育過程中,IL-2對于稱為調(diào)節(jié)性T細胞(T-regs)的獨特T細胞亞群的成熟也是必需的。T-Regs通過阻止反應(yīng)細胞產(chǎn)生IL-2來實現(xiàn)。因此,IL-2需要區(qū)分自我和非自我,這是免疫系統(tǒng)的另一個獨特特征。
關(guān)鍵字: IL-2;IL-2蛋白;IL-2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。