Queried GO term:

  idGO:0016676   Detailed information
  nameoxidoreductase activity, acting on a heme group of donors, oxygen as acceptor
  namespacemolecular_function
  def"Catalysis of an oxidation-reduction (redox) reaction in which a heme group acts as a hydrogen or electron donor and reduces oxygen." [GOC:jl]
  subsetgosubset_prok
  is_aGO:0016675 ! oxidoreductase activity, acting on a heme group of donors

No monarch genes has the input GO term: GO:0016676.