Biotinylated Human PSMA / FOLH1 Protein, His,Avitag™, premium grade
分子别名(Synonym)
FOLH1,PSMA,GIG27,FOLH,NAALAD1,PSM,NAALADase I,GCPII,FGCP
表达区间及表达系统(Source)
Biotinylated Human PSMA, His,Avitag, premium grade (PSA-H82Qb) is expressed from human 293 cells (HEK293). It contains AA Lys 44 - Ala 750 (Accession # Q04609-1).
Predicted N-terminus: His
该产品在涵盖无菌检测与内毒素检测等全套分析的严格质控体系下生产。其性能经过严谨验证,确保适用于细胞培养及临床前阶段各类应用场景。当研究进入后期临床阶段时,我们同步提供定制化GMP蛋白服务:根据您的具体需求,我们将携手开发符合细胞疗法生产规范的GMP级蛋白制品,同时确保其满足细胞制造过程中原辅材料的使用标准。
蛋白结构(Molecular Characterization)

This protein carries a polyhistidine tag at the N-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 83.1 kDa. The protein migrates as 95-115 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
标记(Labeling)
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
蛋白标记度(Protein Ratio)
Passed as determined by the HABA assay / binding ELISA.
内毒素(Endotoxin)
Less than 0.01 EU per μg by the LAL method / rFC method.
无菌(Sterility)
Negative
支原体(Mycoplasma)
Negative.
纯度(Purity)
>95% as determined by SDS-PAGE.
制剂(Formulation)
Supplied as 0.2 μm filtered solution in 25 mM MES, 500 mM NaCl, pH6.5 with trehalose as protectant.
Contact us for customized product form or formulation.
运输(Shipping)
This product is supplied and shipped with dry ice, please inquire the shipping cost.
存储(Storage)
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
The product MUST be stored at -70°C or lower upon receipt;
-70°C for 6 months under sterile conditions.

背景介绍
前列腺特异性膜抗原(PSMA),亦称叶酸水解酶1(FOLH1)、谷氨酸羧肽酶2(GCP2)或N-乙酰化α-连接酸性二肽酶I(NAALAD1),隶属肽酶M28家族M28B亚家族。该蛋白在pH>6.5环境中稳定存在,是一种II型跨膜锌金属肽酶,在神经系统、前列腺、肾脏及小肠中呈现高表达。其以同源二聚体形式存在,每个亚基结合2个锌离子,为NAALAD酶活性所必需。PSMA的催化机制涉及释放未取代的C端谷氨酰残基,典型作用底物为乙酰天冬氨酸-谷氨酸(Ac-Asp-Glu)或叶酰聚-γ-谷氨酸。该酶兼具叶酸水解酶与N-乙酰化α-连接酸性二肽酶(NAALAD酶)活性,并对三聚α-谷氨酸肽具有底物偏好性。GCP-2/PSMA参与前列腺肿瘤进展过程,同时表现二肽基肽酶IV型活性,在体外实验中可特异性切割甘氨酸-脯氨酸-AMC(Gly-Pro-AMC)。
关键字: PSMA;PSMA蛋白;PSMA重组蛋白;ACRO;百普赛斯;
百普赛斯集团ACROBiosystems Group(股票代码:301080)是成立于2010年的跨国生物科技公司,是为全球生物医药、健康产业领域提供关键生物试剂产品及解决方案的行业平台型基石企业。2021年在创业板上市。百普赛斯集团业务遍布全球,横跨亚洲、北美洲、欧洲,在中国、美国、瑞士等12个城市设有办公室、研发中心及生产基地。目前累计服务客户超6000家,与全球Top 20医药企业均建立了长期、稳定的合作伙伴关系。集团旗下拥有品牌ACROBiosystems百普赛斯、bioSeedin柏思荟、Condense Capital垦拓资本和ACRODiagnostics百斯医学等。