Acts as component of the peripheral membrane COG complex that is involved in intra-Golgi protein trafficking. COG is located at the cis-Golgi, and regulates tethering of retrograde intra-Golgi vesicles and possibly a number of other membrane trafficking events (By similarity). Belongs to the COG6 family. The predicted gene AN3723 has been split into 2 genes: AN10466 and AN10441.