Queried GO term:

  idGO:0034450   Detailed information
  nameubiquitin-ubiquitin ligase activity
  namespacemolecular_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]
  is_aGO:0004842 ! ubiquitin-protein ligase activity

Monarch genes assigned with this GO terms:

DPOGS2064621.8e-152
DPOGS2097382.9e-137