Organization of the ER-Golgi interface for membrane traffic control.

Organization of the ER-Golgi interface for membrane traffic control.
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DOI:
10.1038/nrm3588
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发表时间:
2013-06
期刊:
Nature reviews. Molecular cell biology
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外壳蛋白复合体I(COPI)和COPII是内质网(ER)和高尔基体之间双向膜运输所必需的。虽然这些核心涂层机制和其他运输因子在不同物种中高度保守,但高分辨率成像研究表明,在真核细胞中,ER-高尔基体界面的组织是不同的。对COPII组装的调节,在某些情况下是为了管理不同的细胞货物,正在成为决定这种结构的一个重要组成部分。对不同系统,特别是哺乳动物和植物细胞的ER-高尔基体界面进行比较,揭示了该界面的基本要素和不同的组织结构。更好地理解这些界面是如何被调节以满足不同的细胞分泌需求的,应该会为控制蛋白质和脂肪通过分泌途径有效运输的机制提供关键的见解。
Coat protein complex I (COPI) and COPII are required for bidirectional membrane trafficking between the endoplasmic reticulum (ER) and the Golgi. While these core coat machineries and other transport factors are highly conserved across species, high-resolution imaging studies indicate that the organization of the ER–Golgi interface is varied in eukaryotic cells. Regulation of COPII assembly, in some cases to manage distinct cellular cargo, is emerging as one important component in determining this structure. Comparison of the ER–Golgi interface across different systems, particularly mammalian and plant cells, reveals fundamental elements and distinct organization of this interface. A better understanding of how these interfaces are regulated to meet varying cellular secretory demands should provide key insights into the mechanisms that control efficient trafficking of proteins and lipids through the secretory pathway.
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