DNA (cytosine-5-)-methyltransferase activity https://github.com/geneontology/go-ontology/issues/28396 DNA cytosine C5 methylase activity deoxyribonucleic (cytosine-5-)-methyltransferase activity molecular_function GO:0008326 cytosine DNA methyltransferase activity modification methylase activity methylphosphotriester-DNA methyltransferase activity restriction-modification system activity Catalysis of the reaction: a 2'-deoxycytidine in DNA + S-adenosyl-L-methionine = a 5-methyl-2'-deoxycytidine in DNA + H+ + S-adenosyl-L-homocysteine. cytosine DNA methylase activity deoxyribonucleic methylase activity site-specific DNA-methyltransferase (cytosine-specific) activity DNA cytosine C(5) methylase activity deoxyribonucleic acid (cytosine-5-)-methyltransferase activity type II DNA methylase activity RHEA:13681 DNA cytosine methylase activity DNA-cytosine methyltransferase activity EC:2.1.1.37 GO:0003886 DNA 5-cytosine methylase activity DNA-cytosine 5-methylase activity cytosine 5-methyltransferase activity S-adenosyl-L-methionine:DNA (cytosine-5-)-methyltransferase activity cytosine-specific DNA methyltransferase activity MetaCyc:DNA-CYTOSINE-5--METHYLTRANSFERASE-RXN S-adenosylmethionine-dependent methyltransferase activity DNA-methyltransferase activity