Cloning and functional expression of a novel glucuronyltransferase involved in the biosynthesis of the carbohydrate epitope HNK-1.

Cloning and functional expression of a novel glucuronyltransferase involved in the biosynthesis of the carbohydrate epitope HNK-1.
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参与碳水化合物表位 HNK-1 生物合成的新型葡萄糖醛酸转移酶的克隆和功能表达。

DOI:
10.1073/pnas.94.12.6093
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发表时间:
1997
影响因子:
11.1
通讯作者:
T. Kawasaki
T. Kawasaki
中科院分区:
综合性期刊1区
文献类型:
--
作者:
K. Terayama;S. Oka;T. Seiki;Yukari Miki;Akemi Nakamura;Y. Kozutsumi;K. Takio;T. Kawasaki

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HNK-1碳水化合物表位在从昆虫到哺乳动物的广泛物种的神经系统中的一系列细胞粘附分子上以及一些糖脂上特征性地表达。HNK-1表位参与神经系统发育过程中的细胞-细胞和/或细胞-底物相互作用和识别。在本研究中,我们从大鼠脑中分离到一种新的葡萄糖醛酸转移酶,它是糖蛋白上HNK-1表位生物合成的关键酶。基于部分氨基酸序列,我们分离了编码葡萄糖醛酸转移酶的cDNA。从cDNA序列推断的一级结构预测的II型跨膜蛋白与347个氨基酸,并没有检测到的相似性与任何其他蛋白质的已知功能,包括葡萄糖醛酸转移酶的肝脏和嗅觉上皮。在COS-1细胞中表达该酶的可溶性重组形式产生活性葡糖醛酸基转移酶。葡萄糖醛酸转移酶基因在神经系统中的选择性表达与HNK-1表位在神经系统中的几乎唯一定位一致。将葡萄糖醛酸转移酶cDNA转染COS-1细胞,不仅诱导细胞表面HNK-1表位的表达,而且还诱导细胞的显著形态学变化,表明HNK-1表位与细胞-基质相互作用相关。
The HNK-1 carbohydrate epitope is characteristically expressed on a series of cell adhesion molecules and also on some glycolipids in the nervous system over a wide range of species from insect to mammal. The HNK-1 epitope is involved in cell-cell and/or cell-substrate interaction and recognition during the development of the nervous system. In this study, we isolated a novel glucuronyltransferase from rat brain, which is a key enzyme of the biosynthesis of the HNK-1 epitope on glycoproteins. Based on the partial amino acid sequences, we isolated cDNA encoding the glucuronyltransferase. The primary structure deduced from the cDNA sequence predicted a type II transmembrane protein with 347 amino acids and had no detectable similarity with any other proteins of known functions, including glucuronyltransferases of the liver and olfactory epithelium. Expression of a soluble recombinant form of the enzyme in COS-1 cells produced an active glucuronyltransferase. The selective expression of the glucuronyltransferase gene in the nervous system was consistent with the almost exclusive localization of the HNK-1 epitope in the nervous system. Transfection of the glucuronyltransferase cDNA into COS-1 cells induced not only expression of the HNK-1 epitope on the cell surface but also marked morphological changes of the cells, suggesting that the HNK-1 epitope associates with the cell-substratum interaction.
DOI: 10.1385/0-89603-248-5:169
发表时间: 1993
影响因子: --
作者:
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DOI: --
发表时间: 1989-10
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发表时间: 1987
影响因子: 2.7
作者:
Schwarting,GA;Jungalwala,FB;Chou,DK;Boyer,AM;Yamamoto,M
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DOI: --
发表时间: 1987
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影响因子: --
作者:
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通讯作者: RinehartJr,KL
通过单克隆抗体 (HNK-1) 识别的人类 NK 和 K 细胞的分化抗原。
DOI: --
发表时间: 1981
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Abo,T;Balch,CM
通讯作者: Balch,CM