title: Biosynthesis of the 4,5-dimethyl-1,2-phenylene moiety of vitamin B12.
mesh_terms: D001555:Benzene Derivatives / Q000096:biosynthesis*; D002247:Carbon Isotopes; D007093:Imidazoles / Q000096:biosynthesis; D011424:Propionibacterium / Q000378:metabolism; D012266:Ribose / Q000378:metabolism; D014805:Vitamin B 12 / Q000096:biosynthesis*
chemical_list: D001555:Benzene Derivatives; D002247:Carbon Isotopes; D007093:Imidazoles; D012266:Ribose; D014805:Vitamin B 12