EOG82RGNS GO:0004729 24/89 oxygen-dependent protoporphyrinogen oxidase activity molecular_function "Catalysis of the reaction: 3 O(2) + protoporphyrinogen IX = 3 H(2)O(2) + protoporphyrin IX." [EC:1.3.3.4, RHEA:25579] EOG82RGNS GO:0006779 24/89 porphyrin-containing compound biosynthetic process biological_process "The chemical reactions and pathways resulting in the formation 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]