22139 Cyt_C5_DNA_methylase superfamilyThalassiosira pseudonana
GO:0003677 GO:0006306 GO:0003886 -
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
DNA (cytosine-5-)-methyltransferase activity
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.