The biosynthesis of the porphyrin-like moiety of vitamin B12. II. The origin of the methyl groups.
D001669:Biochemical Phenomena; D011166:Porphyrins / Q000378:metabolism*; D014805:Vitamin B 12 / Q000378:metabolism*
D011166:Porphyrins; D014805:Vitamin B 12
PORPHYRINS/metabolism; VITAMIN B12/metabolism