Recruits golgins such as IMH1 to the Golgi. Can bind and hydrolyze GTP. May be involved in trafficking events within the endosomal system. Homodimer. Binds in a GTP-dependent manner to the GRIP domain of IMH1. Interacts with MON2. Present with 5190 molecules/cell in log phase SD medium. Belongs to the small GTPase superfamily. Arf family.