Contributes to the neddylation of all cullins by transferring NEDD8 from N-terminally acetylated NEDD8-conjugating E2s enzyme to different cullin C-terminal domain-RBX complexes and may play a role in the cell cycle progression by regulating the SCF ubiquitin E3 ligase complex, after UV damage (PubMed:18823379, PubMed:19617556, PubMed:23201271, PubMed:27542266). At the cell membrane, can promote and as well inhibit cullins neddylation (PubMed:19617556, PubMed:25349211, PubMed:26906416).