Queried GO terms:

  idGO:0006787   Detailed information
  nameporphyrin catabolic process
  namespacebiological_process
  def"The chemical reactions and pathways resulting in the breakdown of any member of a large group of derivatives or analogs of porphyrin. Porphyrin consists of a ring of four pyrrole nuclei linked each to the next at their alpha positions through a methine group." [GOC:jl, ISBN:0198506732 "Oxford Dictionary of Biochemistry and Molecular Biology"]
  subsetgosubset_prok
  synonym"porphyrin breakdown" EXACT []
  synonym"porphyrin catabolism" EXACT []
  synonym"porphyrin degradation" EXACT []
  is_aGO:0006778 ! porphyrin metabolic process
  is_aGO:0033015 ! tetrapyrrole catabolic process
  is_aGO:0051187 ! cofactor catabolic process

No monarch genes has this GO term.