Are Rab proteins the link between Golgi organization and membrane trafficking?
Are Rab proteins the link between Golgi organization and membrane trafficking?
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DOI:
10.1007/s00018-012-1021-6
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发表时间:
2012-12
影响因子:
8
通讯作者:
Storrie, Brian
中科院分区:
文献类型:
--
作者:
Liu, Shijie;Storrie, Brian
The fundamental separation of Golgi function between subcompartments termed cisternae is conserved across all eukaryotes. Likewise, Rab proteins, small GTPases of the Ras superfamily, are putative common coordinators of Golgi organization and protein transport. However, despite sequence conservation, e.g., Rab6 and Ypt6 are conserved proteins between humans and yeast, the fundamental organization of the organelle can vary profoundly. In the yeast Sacchromyces cerevisiae, the Golgi cisternae are physically separated from one another while, in mammalian cells, the cisternae are stacked one upon the other. Moreover, in mammalian cells many Golgi stacks are typically linked together to generate a ribbon structure. Do evolutionarily conserved Rab proteins regulate secretory membrane trafficking and diverse Golgi organization in a common manner? In mammalian cells, some Golgi associated Rab proteins function in coordination of protein transport and maintenance of Golgi organization. These include Rab6, Rab33B, Rab1, Rab2, Rab18 and Rab43. In yeast, these include Ypt1, Ypt32 and Ypt6. Here, based on evidence from both yeast and mammalian cells, we speculate on the essential role of Rab proteins in Golgi organization and protein transport.
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DOI:
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发表时间:
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