Letter: Concerning the intermediacy of uro'gen III and of a heptacarboxylic uro'gen in corrinoid biosynthesis.
D011166:Porphyrins; D011424:Propionibacterium / Q000378:metabolism; D014578:Uroporphyrins; D014805:Vitamin B 12 / Q000096:biosynthesis*
D011166:Porphyrins; D014578:Uroporphyrins; D014805:Vitamin B 12