Protein-bound porphyrins associated with protoporphyrin biosynthesis.
D011166:Porphyrins / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism*; D011524:Protoporphyrins
D011166:Porphyrins; D011506:Proteins; D011524:Protoporphyrins
PORPHYRINS/metabolism; PROTEINS/metabolism