Subunit of RAVE complex (Rav1p, Rav2p, Skp1p); the RAVE complex associates with the V1 domain of the vacuolar membrane (H+)-ATPase (V-ATPase) and promotes assembly and reassembly of the holoenzyme; shares extensive structural homology with ROGDI, a Rabconnectin-3 subunit that causes Kohlschutter-Tonz syndrome; human ROGDI can complement a yeast RAV2 null mutant