ubiquitin-like protein transferase activity NEDD8 transferase activity https://github.com/geneontology/go-ontology/issues/30964 Reactome:R-HSA-8952631 Reactome:R-HSA-8951661 GO:0019788 Reactome:R-HSA-8951764 NEDD8 conjugating enzyme activity GO:0019945 Hub1 conjugating enzyme activity Reactome:R-HSA-8952044 Reactome:R-HSA-8956025 GO:0042295 RUB1 conjugating enzyme activity GO:0016976 molecular_function Reactome:R-HSA-8952618 Reactome:R-HSA-8952626 Reactome:R-HSA-8951648 Reactome:R-HSA-8952638 Catalysis of the transfer of NEDD8 from one protein to another via the reaction X-NEDD8 + Y = Y-NEDD8 + X, where both X-NEDD8 and Y-NEDD8 are covalent linkages.