What is "exocyst"

n. (context biochemistry English) a eukaryotic protein complex with functions related to vesicle trafficking, leading to a role in exocytosis

The exocyst is an octameric protein complex involved in vesicle trafficking, specifically the tethering and spatial targeting of post- Golgi vesicles to the plasma membrane prior to vesicle fusion. It is implicated in a number of cell processes, including exocytosis, cell migration, and growth.