| id | GO:0034450 Detailed information |
|---|---|
| name | ubiquitin-ubiquitin ligase activity |
| namespace | molecular_function |
| def | "Catalysis of the reaction: ATP + ubiquitin + protein N-ubiquityl(n)lysine = AMP + diphosphate + protein N-ubiquityl(n+1)lysine. This reaction is the ligation of ubiquitin groups, via isopeptide bonds, to extend the length of the multiubiquitin chain attached to a substrate protein." [GOC:mah, GOC:mcc, PMID:10089879, PMID:17190603] |
| synonym | "E4" EXACT [] |
| xref | Reactome:357881 "ubiquitin-ubiquitin ligase activity" |
| is_a | GO:0004842 ! ubiquitin-protein ligase activity |