《生命科学》 2016, 28(4): 442-451
摘 要:摘 要:细胞质被膜复合体II (COPII) 介导蛋白质从内质网(ER) 运向高尔基体(Golgi)。它是真核生物蛋白质分泌途径中的重要组分,在保持细胞内各个细胞器动态平衡中发挥重要功能。COPII 小泡由5 种高度保守的细胞质蛋白组成:胞质GTP 酶Ras 相关蛋白1 (Sar1)、内衣被组分Sec23 和Sec24、外衣被组分Sec13和Sec31。对COPII 的形成过程、COPII 各个亚单位的功能研究进展以及各物种间COPII 组分的冗余问题进行了讨论。
Abstract: Abstract: The coat protein complex II (COPII) transport proteins from endoplasmic reticulum (ER) to Golgi. COPII is an important component of the protein secretory pathway in eukaryotes and plays an essential role in maintaining the homeostasis of various intracellular organelles. COPII coat complex consists of five highly conserved cytosolic proteins: cytosolic GTPase Ras related protein 1 Sar 1, inner shell component Sec23-Sec24, and outer cage component Sec13-Sec31. Here, we discuss the processes of COPII formation, and review the research progress of each subunit of COPII, and the redundancy of COPII subunit in different species.