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名称
β-1,4-半乳糖基转移酶1
货号
B755120-50μg
包装规格
50μg
级别
重组
浓度
B4GALT1 human recombinant, expressed in HEK 293 cells, 2000 units/mg protein
产品介绍
该重组B4GALT1产物可用于研究该酶的作用方式及其潜在的抑制剂。它还可用作体外修饰糖蛋白的糖工程工具。应用: 重组人β-1,4-半乳糖基转移酶1(B4GALT1)在人HEK 293细胞中表达为糖蛋白,计算分子量为40 kDa。由于糖基化作用,DTT还原蛋白在SDS-PAGE上以~55 kDa多肽形式迁移。这种蛋白质是在人细胞中产生的,不含血清。人细胞表达系统允许类人糖基化和折叠,通常支持比活性更高的蛋白质。 Recombinant human Beta-1,4-galactosyltransferase 1 (B4GALT1) is expressed in human HEK 293 cells as a glycoprotein with a calculated molecular mass of 40 kDa. The DTT-reduced protein migrates as a ~55 kDa polypeptide on SDS-PAGE due to glycosylation. This protein is manufactured in human cells, with no serum. The human cells expression system allows human-like glycosylation and folding, and often supports higher specific activity of the protein. Application: This recombinant B4GALT1 product can be used to study the mode of action of the enzyme, as well as its potential inhibitors. It can also be used as a glycoengineering tool to modify glycoproteins in vitro.
生化机理
β(1→4)半乳糖基转移酶1(B4GALT1)是II型膜结合糖蛋白,可将半乳糖从二磷酸尿苷-α-D-半乳糖(UDP-半乳糖)转移至受体糖(例如N-乙酰葡萄糖胺(GlcNAc)),形成β(1→4)键。B4GALT1存在于高等真核细胞的高尔基体中。 B4GALT1的主要功能是将β(1→4)连接的半乳糖残基添加到带有末端N-乙酰葡萄糖胺残基的寡糖受体上。这是N-聚糖加工途径中的晚期延伸步骤。B4GALT1酶的活性广泛分布于脊椎动物界的哺乳动物和非哺乳动物(包括鸟类和两栖动物)。B4GALT1酶的活性也在大约10亿年前从动物中分化出来的植物中得到证实。B4GALT1与泌乳期乳腺中表达的蛋白质α-乳白蛋白(LA)相互作用形成乳糖合成酶(LS)复合物,该复合物可将半乳糖从UDP-α-D-Gal转移至葡萄糖,从而产生乳中分泌的乳糖。B4GALT1的缺陷是2D型先天性糖基化病(CDG2D)的病因。在IgA肾病中,肾小球B4GALT1表达增加。IgA结合、IgA诱导的系膜细胞脾酪氨酸激酶磷酸化和IL-6合成受到一组β(1→4)半乳糖基转移酶特异性抗体的抑制,这表明IgA可与(14)半乳糖基转移酶的催化结构域结合。
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Research chemical

Research chemical; supplied for laboratory research, analysis, inspection, and scientific procurement use.

item number:B755120-50μg
Product model:50μg
level: reorganization
Lead Time:30days
sold 355 Items
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