Functional expression and genomic structure of human N-acetylglucosamine-6-O-sulfotransferase that transfers sulfate to beta-N-acetylglucosamine at the nonreducing end of an N-acetyllactosamine sequence.

Functional expression and genomic structure of human N-acetylglucosamine-6-O-sulfotransferase that transfers sulfate to beta-N-acetylglucosamine at the nonreducing end of an N-acetyllactosamine sequence.
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人 N-乙酰葡糖胺-6-O-磺基转移酶的功能表达和基因组结构,该酶将 N-乙酰基乳糖胺序列非还原端的硫酸盐转移为 β-N-乙酰葡糖胺。

DOI:
10.1016/s0304-4165(00)00136-7
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发表时间:
2000
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
K. Sugahara
K. Sugahara
中科院分区:
--
文献类型:
--
作者:
H. Sakaguchi;H. Kitagawa;K. Sugahara

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克隆了人n -乙酰氨基葡萄糖-6- o -硫基转移酶(Gn6ST)的cDNA和基因。与小鼠Gn6ST序列的比较分析表明,两者氨基酸同源性达96%。该蛋白的可溶性重组形式在COS-1细胞中的表达产生了活性的硫转移酶,将硫酸盐转移到GlcNAcβ1- o - ch3、GlcNAcβ1- 3galβ 1- o - ch3和GlcNAcβ1- 3galβ 1- 4glcnac末端的GlcNAc上,而不转移到GlcNAcα1- 4glca β1- 3galβ 1- 3galβ 1- 4xyl β1- o - ser上。此外,没有使用galnac β1- 4glcnac β1- o -萘烯乙醇和GalNAcβ1-4GlcAβ1-3Galβ1-3Galβ1-4Xylβ1-O-Ser作为受体。这些发现表明,末端β连接的GlcNAc残基是Gn6ST受体底物所必需的。人类Gn6ST基因全长约7kb,由两个外显子组成,具有一个无内含子的编码区。
The cDNA and gene encoding human N-acetylglucosamine-6-O-sulfotransferase (Gn6ST) have been cloned. Comparative analysis of this cDNA with the mouse Gn6ST sequence indicates 96% amino acid identity between the two sequences. The expression of a soluble recombinant form of the protein in COS-1 cells produced an active sulfotransferase, which transferred sulfate to the terminal GlcNAc in GlcNAcβ1-O-CH3, GlcNAcβ1-3Galβ1-O-CH3and GlcNAcβ1-3Galβ1-4GlcNAcβ1-3Galβ1-4GlcNAc but not in GlcNAcα1-4GlcAβ1-3Galβ1-3Galβ1-4Xylβ1-O-Ser. In addition, neither Galβ1-4GlcNAcβ1-O-naphthalenemethanol nor GalNAcβ1-4GlcAβ1-3Galβ1-3Galβ1-4Xylβ1-O-Ser were utilized as acceptors. These findings indicate that a terminal β-linked GlcNAc residue is necessary for acceptor substrates of Gn6ST. The human Gn6ST gene spans about 7 kb, consists of two exons and exhibits an intron-less coding region.
人硫酸乙酰肝素-N-脱乙酰酶/N-磺基转移酶基因的基因组组织:排除特雷彻·柯林斯综合征发病机制中的致病作用。
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发表时间: 1996
期刊: Genomics
影响因子: 4.4
作者:
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期刊: Biochimica et biophysica acta
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