The Golgi puppet master: COG complex at center stage of membrane trafficking interactions.

The Golgi puppet master: COG complex at center stage of membrane trafficking interactions.
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DOI:
10.1007/s00418-013-1117-6
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发表时间:
2013-09
影响因子:
2.3
通讯作者:
Lupashin, Vladimir
Lupashin, Vladimir
中科院分区:
生物学3区
文献类型:
--
作者:
Willett, Rose;Ungar, Daniel;Lupashin, Vladimir

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分泌途径中的中央细胞器是高尔基体,这是一组排列成堆叠的扁平的膜。高尔基体内转运的脑池成熟模型描述了高尔基体池通过接受驻留蛋白,如糖基化酶,通过逆行囊泡介导的循环,从顺式到内侧再到反式成熟。保守的寡聚体高尔基体(COG)复合体是CATCHR家族的一个多亚单位拴系复合体,在高尔基体逆行转运过程中组织囊泡靶向。COG复合体在物理上和功能上都与维持高尔基体内运输的所有类型的分子相互作用,即圈套、圈套相互作用蛋白、RAB、卷曲线圈系绳、囊状外套和分子马达。在这份报告中,我们将回顾COG相互作用组的现状,并分析COG编排囊泡靶向的分子机制的可能情况,它在维持所有真核细胞的糖基化动态平衡方面发挥着核心作用。
The central organelle within the secretory pathway is the Golgi apparatus, a collection of flattened membranes organized into stacks. The cisternal maturation model of intra-Golgi transport depicts Golgi cisternae that mature from cis to medial to trans by receiving resident proteins, such as glycosylation enzymes via retrograde vesicle-mediated recycling. The conserved oligomeric Golgi (COG) complex, a multi-subunit tethering complex of the CATCHR (complexes associated with tethering containing helical rods) family, organizes vesicle targeting during intra-Golgi retrograde transport. The COG complex both physically, and functionally, interacts with all classes of molecules maintaining intra-Golgi trafficking, namely SNAREs, SNARE-interacting proteins, Rabs, coiled-coil tethers, vesicular coats and molecular motors. In this report we will review the current state of the COG interactome and analyze possible scenarios for the molecular mechanism of the COG orchestrated vesicle targeting, which plays a central role in maintaining glycosylation homeostasis in all eukaryotic cells.
RAB GTPases在膜交通和细胞生理学中的作用。
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