Queried GO terms:

  idGO:0006778   Detailed information
  nameporphyrin metabolic process
  namespacebiological_process
  def"The chemical reactions and pathways involving any member of a large group of derivatives or analogs of porphyrin. Porphyrins 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 metabolism" EXACT []
  xrefReactome:1253430 "Metabolism of porphyrins"
  xrefReactome:1280234 "Metabolism of porphyrins"
  xrefReactome:1299094 "Metabolism of porphyrins"
  xrefReactome:1326810 "Metabolism of porphyrins"
  xrefReactome:1352911 "Metabolism of porphyrins"
  xrefReactome:1373117 "Metabolism of porphyrins"
  xrefReactome:1393133 "Metabolism of porphyrins"
  xrefReactome:1417620 "Metabolism of porphyrins"
  xrefReactome:1450716 "Metabolism of porphyrins"
  xrefReactome:1471176 "Metabolism of porphyrins"
  xrefReactome:1496922 "Metabolism of porphyrins"
  xrefReactome:1514310 "Metabolism of porphyrins"
  xrefReactome:1521178 "Metabolism of porphyrins"
  xrefReactome:1526918 "Metabolism of porphyrins"
  xrefReactome:1532657 "Metabolism of porphyrins"
  xrefReactome:1536082 "Metabolism of porphyrins"
  xrefReactome:1538048 "Metabolism of porphyrins"
  xrefReactome:1539329 "Metabolism of porphyrins"
  xrefReactome:1540340 "Metabolism of porphyrins"
  xrefReactome:189445 "Metabolism of porphyrins"
  xrefWikipedia:Porphyrin
  is_aGO:0033013 ! tetrapyrrole metabolic process
  is_aGO:0051186 ! cofactor metabolic process

No monarch genes has this GO term.