Potential role in vesicular protein trafficking, mainly in the early secretory pathway. Required for the maintenance of the Golgi apparatus; involved in protein exchange between Golgi stacks during assembly. Probably not required for COPI-vesicle-mediated retrograde transport.
Belongs to the EMP24/GP25L family. Contains 1 GOLD domain.
Endoplasmic reticulum membrane. Golgi apparatus > cis-Golgi network membrane. Endoplasmic reticulum-Golgi intermediate compartment membrane. Probably cycles between compartments of the early secretatory pathway.