May be required for stable YIPF1 and YIPF2 protein expression. Predominantly interacts with YIPF1 or YIPF2, but may also form a ternary complex with YIPF1 and YIPF2. This interaction may stabilize YIPF1 and YIPF2. Evenly distributed between cis- and trans-Golgi apparatus. Mainly localizes within medial-/trans-Golgi and trans-Golgi network (TGN), while less so within cis-Golgi. Belongs to the YIP1 family.