Role of sialic acid in the mobility of membrane proteins containing O-linked oligosaccharides on polyacrylamide gel electrophoresis in sodium dodecyl sulfate.

Role of sialic acid in the mobility of membrane proteins containing O-linked oligosaccharides on polyacrylamide gel electrophoresis in sodium dodecyl sulfate.
复制标题

十二烷基硫酸钠聚丙烯酰胺凝胶电泳中唾液酸对含有 O-连接寡糖的膜蛋白迁移率的作用。

DOI:
10.1111/j.1432-1033.1982.tb06478.x
复制
发表时间:
1982
期刊:
European journal of biochemistry
影响因子:
--
通讯作者:
Andersson,LC
Andersson,LC
中科院分区:
--
文献类型:
--
作者:
Gahmberg,CG;Andersson,LC

文献摘要

参考文献

被引文献

相似文献

人红细胞膜的主要唾液酸糖蛋白血型糖蛋白 A 含有 15O-糖苷连接的寡糖和一种 N-糖苷寡糖。在神经氨酸酶处理非变性蛋白后,该蛋白在十二烷基硫酸钠聚丙烯酰胺凝胶电泳上显示迁移率降低。这种现象背后的分子机制已被阐明。在完整细胞中或在含有 Triton X-100 的缓冲液中溶解后,用神经氨酸酶处理血型糖蛋白 A,导致主要四糖 N-乙酰神经氨基糖基α2-3半乳糖基β1-3(N-乙酰神经氨基糖基α2-6)-N-乙酰半乳糖胺转化为三糖半乳糖基β1-3(N-乙酰神经氨基糖基α2-) 6)-N-乙酰半乳糖胺和二糖半乳糖基β1-3-N-乙酰半乳糖胺。用十二烷基硫酸钠变性后,霍乱弧菌尿氨酸酶也释放出与 N-乙酰半乳糖胺结合的唾液酸。这种处理导致电泳迁移率增加。结果表明,与半乳糖连接的远端唾液酸很容易被神经氨酸酶利用,并且它们的负电荷在十二烷基硫酸钠存在的情况下在聚丙烯酰胺凝胶电泳中增加了电泳迁移率。相反,在不使底物变性的情况下,神经氨酸酶不会释放血型糖蛋白 A 的大多数 thcN-乙酰半乳糖胺连接的唾液酸。与复合型寡糖的唾液酸一样,它们引起的电泳迁移率降低完全是由于它们的质量,而没有看到电荷的显着贡献。
The major sialoglycoprotein of the human red‐cell membrane, glycophorin A, contains 15O‐glycosidically linked oligosaccharides and one N‐glycosidic oligosaccharide. The protein shows a decreased mobility on polyacrylamide gel electrophoresis in sodium dodecyl sulfate after neuraminidase treatment of thc nondenatured protein.The molecular mechanism behind this phenomenon has been elucidated. Neuraminidase treatment of glycophorin A in intact cells or after solubilization in buffers containing Triton X‐100 resulted in conversion of the predominant tetrasaccharideN‐acetylneuraminosylα2 ‐3galactosylβl‐ 3(N‐acetylneuraminosylα2 ‐ 6)‐N‐acetylgalactosamine to the trisaccharide galactosylβl ‐ 3(N‐acetylneuraminosylα2 ‐ 6)‐N‐acetylgalactosamine and the disaccharide galactosylβl ‐ 3‐N‐acetylgalactosamine. After denaturation with sodium dodecyl sulfate,Vibrio choleraeneuraminidase also liberated theN‐acetylgalactosamine‐bound sialic acids. Such treatment resulted in increased electrophoretic mobility.The results show that distal sialic acids linked to galactose are readily available to neuraminidase, and that their negative charge gives an increased electrophoretic mobility in polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. In contrast, most of thcN‐acetylgalactosamine‐linked sialic acids of glycophorin A are not liberated by neuraminidase without denaturation of the substrate. Like sialic acids of complex‐type oligosaccharides the decreased electrophoretic mobility caused by them is exclusively due to their mass while no significant contribution by the charge was seen.
DOI: 10.1073/pnas.78.5.2712
发表时间: 1981-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
CLEMETSON, KJ;NAIM, HY;LUSCHER, EF
通讯作者: LUSCHER, EF
主要的人类红细胞糖蛋白跨越细胞膜。
DOI: --
发表时间: 1971
期刊: Nature: New biology
影响因子: --
作者:
M. Bretscher
通讯作者: M. Bretscher
DOI: --
发表时间: 1978
期刊: Blood
影响因子: 20.3
作者:
L. Andersson;C. Gahmberg
通讯作者: C. Gahmberg
人红细胞糖脂和糖蛋白中细胞表面半乳糖和半乳糖胺的外部标记。
DOI: --
发表时间: 1973
影响因子: 4.8
作者:
C. Gahmberg;S. Hakomori
通讯作者: S. Hakomori
血型糖蛋白 A 的天冬酰胺连接糖链的结构。
DOI: --
发表时间: 1980
影响因子: 4.8
作者:
H. Yoshima;H. Furthmayr;A. Kobata
通讯作者: A. Kobata