Predicted to enable identical protein binding activity. Predicted to be involved in Golgi organization; Golgi vesicle prefusion complex stabilization; and retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum. Predicted to be located in Golgi membrane. Predicted to be part of Golgi transport complex. Human ortholog(s) of this gene implicated in Saul-Wilson syndrome and congenital disorder of glycosylation type IIj. Orthologous to human COG4 (component of oligomeric golgi complex 4). [provided by Alliance of Genome Resources, Apr 2022]