Acetylated cis-Golgi protein, homolog of human GRASP65; required for unconventional protein secretion (UPS) of Acb1p in response to starvation; forms amyloid-like fibrils under heat shock, and coacervates through liquid–liquid phase separation during starvation, as a precursor to compartment for unconventional protein secretion (CUPS) biogenesis; forms a complex with the coiled-coil protein Bug1p; protein abundance increases in response to DNA replication stress