Human Siglec-3 / CD33 Protein, His Tag (MALS verified)
分子別名(Synonym)
CD33,SIGLEC3,gp67
表達區(qū)間及表達系統(tǒng)(Source)
Human Siglec-3, His Tag (CD3-H5226) is expressed from human 293 cells (HEK293). It contains AA Asp 18 - His 259 (Accession # AAH28152.1).
Predicted N-terminus: Asp 18
蛋白結構(Molecular Characterization)

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 27.6 kDa. The protein migrates as 43-55 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
內毒素(Endotoxin)
Less than 0.1 EU per μg by the LAL method / rFC method.
純度(Purity)
>95% 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
髓系細胞表面抗原CD33(亦稱為SIGLEC3、Siglecs(唾液酸結合免疫球蛋白樣凝集素)及GP67)是一種單次跨膜的I型膜蛋白,隸屬于免疫球蛋白超家族及SIGLEC(唾液酸結合免疫球蛋白樣凝集素)家族。人源CD33/Siglec-3 cDNA編碼364個氨基酸的多肽鏈,包含疏水信號肽、N端Ig樣V型結構域、一個Ig樣C2型結構域、跨膜區(qū)及胞質尾部。CD33/Siglec-3通常被認為具有髓系特異性,但也可在某些淋巴樣細胞上表達。在免疫應答中,當配體誘導酪氨酸磷酸化后,CD33/Siglec-3可通過其SH2結構域招募胞質磷酸酶,作為抑制性受體通過去磷酸化信號分子來阻斷信號傳導。CD33/Siglec-3能夠誘導急性髓系白血病細胞發(fā)生凋亡。
關鍵字: CD33;CD33蛋白;CD33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、健康產業(yè)領域提供關鍵生物試劑產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。集團旗下擁有品牌ACROBiosystems百普賽斯、bioSeedin柏思薈、Condense Capital墾拓資本和ACRODiagnostics百斯醫(yī)學等。