Suppr超能文献

从高尔基体区域到内质网的逆行运输对鸟苷-5'-O-(3-硫代三磷酸)敏感。

Retrograde transport from the Golgi region to the endoplasmic reticulum is sensitive to GTP gamma S.

作者信息

Tan A, Bolscher J, Feltkamp C, Ploegh H

机构信息

The Netherlands Cancer Institute, Division of Cellular Biochemistry, Amsterdam.

出版信息

J Cell Biol. 1992 Mar;116(6):1357-67. doi: 10.1083/jcb.116.6.1357.

Abstract

The involvement of GTP-binding proteins in the intracellular transport of the secretory glycoprotein alpha 1-antitrypsin was investigated in streptolysin O-permeabilized HepG2 cells. This permeabilization procedure allows ready access to the intracellular milieu of the membrane-impermeant, nonhydrolyzable GTP analog GTP gamma S. In streptolysin O-permeabilized HepG2 cells, the constitutive secretory pathway remains functional and is sensitive to GTP gamma S. Exposure of HepG2 cells to brefeldin A resulted in redistribution of Golgi-resident glycosyltransferases (including both alpha 2----3 and alpha 2----6 sialyltransferases) to the ER. This redistribution was sensitive to GTP gamma S. Our results suggest that GTP-binding proteins are involved in the regulation not only of the anterograde, but also of the retrograde, pathway.

摘要

在经链球菌溶血素O通透处理的HepG2细胞中,研究了GTP结合蛋白在分泌性糖蛋白α1-抗胰蛋白酶细胞内运输中的作用。这种通透处理方法使得能够方便地接触到膜不透性、不可水解的GTP类似物GTPγS的细胞内环境。在经链球菌溶血素O通透处理的HepG2细胞中,组成型分泌途径仍然具有功能,并且对GTPγS敏感。将HepG2细胞暴露于布雷菲德菌素A会导致高尔基体驻留糖基转移酶(包括α2----3和α2----6唾液酸转移酶)重新分布到内质网。这种重新分布对GTPγS敏感。我们的结果表明,GTP结合蛋白不仅参与顺行途径的调节,还参与逆行途径的调节。

相似文献

引用本文的文献

10
Streptolysin O-permeabilized cell system for studying trans-acting activities of exogenous nuclear proteins.
Nucleic Acids Res. 1993 Aug 25;21(17):4005-10. doi: 10.1093/nar/21.17.4005.

本文引用的文献

4
Kinetic study on streptolysin O.链球菌溶血素O的动力学研究
J Biochem. 1972 Feb;71(2):227-37. doi: 10.1093/oxfordjournals.jbchem.a129759.
5
Progress in unraveling pathways of Golgi traffic.高尔基体运输途径解析的进展。
Annu Rev Cell Biol. 1985;1:447-88. doi: 10.1146/annurev.cb.01.110185.002311.
6
Assembly of asparagine-linked oligosaccharides.天冬酰胺连接寡糖的组装
Annu Rev Biochem. 1985;54:631-64. doi: 10.1146/annurev.bi.54.070185.003215.
7
Mechanism of membrane damage by streptolysin-O.链球菌溶血素O造成膜损伤的机制。
Infect Immun. 1985 Jan;47(1):52-60. doi: 10.1128/iai.47.1.52-60.1985.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验