How Does DNA Methylation Function as a Catalytic Process?
DNA methylation is catalyzed by a group of enzymes known as DNA Methyltransferases (DNMTs). These enzymes facilitate the transfer of a methyl group from S-adenosylmethionine (SAM) to the 5' position of the cytosine ring. The primary enzymes involved are DNMT1, DNMT3A, and DNMT3B.