[Biological transmethylations].
D002794:Choline / Q000096:biosynthesis; D003401:Creatine / Q000096:biosynthesis; D006632:Histamine / Q000096:biosynthesis; D008745:Methylation; D012436:S-Adenosylmethionine / Q000096:biosynthesis*; D014443:Tyrosine / Q000096:biosynthesis
D014443:Tyrosine; D012436:S-Adenosylmethionine; D006632:Histamine; D003401:Creatine; D002794:Choline
Le transmetilazioni biologiche.