GRASP55 was first found as Golgi cisternae stacking protein. Due to the crucial role of Golgi in vesicular trafficking and protein modification, GRASP55 was found to function in these two aspects. Further investigation revealed that GRASP55 also participates in the unconventional secretory pathway under stress. Moreover, GRASP55 is involved in autophagy initiation and autophagosome maturation, as well as cell activity.

中文翻译：

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GRASP55：一种多功能蛋白质。

GRASP55最初被发现为高尔基蓄水池堆积蛋白。由于高尔基体在水泡运输和蛋白质修饰中的关键作用，发现GRASP55在这两个方面起作用。进一步的研究表明，GRASP55在压力下也参与了非常规的分泌途径。此外，GRASP55参与自噬的启动和自噬体的成熟，以及细胞活性。