title: Roles of vitamin B 12 and folic acid in methionine synthesis.
mesh_terms: D002247:Carbon Isotopes; D002384:Catalysis; D055598:Chemical Phenomena; D002621:Chemistry; D004926:Escherichia coli / Q000201:enzymology*; D005492:Folic Acid; D006710:Homocysteine; D008715:Methionine / Q000096:biosynthesis*; D008745:Methylation; D008780:Methyltransferases; D012436:S-Adenosylmethionine; D014166:Transferases; D014805:Vitamin B 12
chemical_list: D002247:Carbon Isotopes; D006710:Homocysteine; D012436:S-Adenosylmethionine; D005492:Folic Acid; D008715:Methionine; D014166:Transferases; D008780:Methyltransferases; D014805:Vitamin B 12