Probing sialoglycans on fetal bovine fetuin with azido-sugars using glycosyltransferases.

Probing sialoglycans on fetal bovine fetuin with azido-sugars using glycosyltransferases.
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使用糖基转移酶用叠氮糖探测胎牛胎球蛋白上的唾液酸聚糖。

DOI:
10.1093/glycob/cwv109
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发表时间:
2016
期刊:
影响因子:
4.3
通讯作者:
K. Swift
K. Swift
中科院分区:
生物学3区
文献类型:
--
作者:
Zhengliang L. Wu;Xinyi Huang;A. Burton;K. Swift

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唾液酸是通常在大多数糖蛋白的末端位置上发现的带负电荷的糖残基。它们在这些蛋白质的稳定性和溶解性中起重要作用。由于其独特的定位,它们也经常充当各种配体的受体,因此参与许多细胞-细胞和细胞-病原体相互作用。在这里,使用在体外掺入的可点击单糖与各种糖基转移酶,我们探测胎牛胎球蛋白的唾液酸聚糖。掺入的单糖通过点击化学以蛋白质印迹的形式用化学发光检测。结果表明,N-和O-聚糖上的非还原性末端Gal残基完全唾液酸化,但O-聚糖中的肽连接的GalNAc残基没有。通过使用α-2,3-唾液酸转移酶、N-乙酰氨基半乳糖α-2,6-唾液酸转移酶和对核心-1聚糖具有特异性的β-1,6-N-乙酰葡糖胺基转移酶进行探测,反复确认唾液酸核心-1聚糖的存在。结果还表明在蛋白质上存在微量的唾液酸化Tn抗原。
Sialic acids are negatively charged sugar residues commonly found on the terminal positions of most glycoproteins. They play important roles in the stability and solubility of these proteins. Due to their unique positioning, they also frequently act as receptors for various ligands, and therefore are involved in numerous cell-cell and cell-pathogen interactions. Here, using in vitro incorporation of clickable monosaccharides with various glycosyltransferases, we probed the sialoglycans on fetal bovine fetuin. The incorporated monosaccharides were detected with chemiluminescence via click chemistry in a format of western blotting. The results indicate that the non-reducing end Gal residues on both N- and O-glycans are fully sialylated, but the peptide-linked GalNAc residues in O-glycans are not. The presence of sialyl core-1 glycan was repeatedly confirmed by probing with α-2,3-sialyltransferases, N-acetylgalactosaminide α-2,6-sialyltransferases and a β-1,6-N-acetylglucosaminyltransferase that is specific for core-1 glycan. The results also suggest the presence of a minute amount of sialyl Tn antigen on the protein.
DOI: 10.1073/pnas.79.15.4540
发表时间: 1982-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
ELDER, JH;ALEXANDER, S
通讯作者: ALEXANDER, S
DOI: 10.1016/s0021-9258(18)47707-1
发表时间: 1987-11
期刊: The Journal of biological chemistry
影响因子: --
作者:
Albert S. B. Edge;R. Spiro
通讯作者: Albert S. B. Edge;R. Spiro
DOI: 10.1093/glycob/4.6.873
发表时间: 1994-12-01
期刊: GLYCOBIOLOGY
影响因子: 4.3
作者:
YANG, JM;BYRD, JC;BROCKHAUSEN, I
通讯作者: BROCKHAUSEN, I
编码 N-乙酰氨基葡萄糖转移酶 I 的小鼠基因的克隆和表达以及人类基因的染色体定位。
DOI: 10.1093/glycob/2.4.383
发表时间: 1992
期刊: Glycobiology
影响因子: 4.3
作者:
Kumar,R;Yang,J;Eddy,RL;Byers,MG;Shows,TB;Stanley,P
通讯作者: Stanley,P
Nishimura, N.:“来自大鼠脑的两种 rab GDI 物种的分子克隆和表征——脑特异性和普遍存在的类型。”
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