STEPWISE ASSEMBLY OF FUNCTIONALLY ACTIVE-TRANSPORT VESICLES

被引:260
作者
OSTERMANN, J [1 ]
ORCI, L [1 ]
TANI, K [1 ]
AMHERDT, M [1 ]
RAVAZZOLA, M [1 ]
ELAZAR, Z [1 ]
ROTHMAN, JE [1 ]
机构
[1] UNIV GENEVA, SCH MED, INST HISTOL & EMBRYOL, DEPT MORPHOL, CH-1211 GENEVA 4, SWITZERLAND
基金
美国国家卫生研究院;
关键词
D O I
10.1016/0092-8674(93)90545-2
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Budding of COP-coated vesicles (the likely carriers of newly synthesized proteins from the endoplasmic reticulum through the Golgi stack) from Golgi cisternae requires ADP-ribosylation factor (ARF), coatomer proteins from the cytosol, GTP, and fatty acyl-coenzyme A (CoA). The assembly of coated buds on the membranes requires coatomer, ARF, and GTP. When palmitoyl-CoA is added, membrane fission occurs at the coated bud, releasing coated vesicles. We show that COP-coated vesicles can be generated stepwise in vitro and isolated in a functionally active form, demonstrating that the minimal set of cytosolic components required for their formation as well as principal steps in their assembly have been identified.
引用
收藏
页码:1015 / 1025
页数:11
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