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 plays an essential role in the regulation of SCF (SKP1-CUL1-F-box protein)-type complexes activity. {ECO:0000269|PubMed:19617556, ECO:0000269|PubMed:23201271, ECO:0000269|PubMed:26906416}. This is the function of DCUN1D2 (defective in cullin neddylation 1 domain containing 2, ENSG00000150401).