title: Biosynthesis of corrinoids. Uroporphyrinogen 3 as a precrusor of vitamin B 12 .
mesh_terms: D003035:Cobalt; D011166:Porphyrins; D011422:Propionates; D011424:Propionibacterium / Q000378:metabolism; D011758:Pyrroles; D014805:Vitamin B 12 / Q000096:biosynthesis*
chemical_list: D011166:Porphyrins; D011422:Propionates; D011758:Pyrroles; D003035:Cobalt; D014805:Vitamin B 12