The protein encoded by this gene is a peripheral membrane
protein which recycles between the cytosol and the Golgi apparatus
during interphase. It is regulated by phosphorylation:
dephosphorylated protein associates with the Golgi membrane and
dissociates from the membrane upon phosphorylation. Ras-associated
protein 1 recruits this protein to coat protein complex II (COPII)
vesicles during budding from the endoplasmic reticulum, where it
interacts with a set of COPII vesicle-associated SNAREs to form a
cis-SNARE complex that promotes targeting to the Golgi apparatus.
Transport from the ER to the cis/medial Golgi compartments requires
the action of this gene product, GM130 and giantin in a sequential
manner.
