a 2'-deoxycytidine in DNA + S-adenosyl-L-methionine = a 5-methyl-2'-deoxycytidine in DNA + S-adenosyl-L-homocysteine + H(+)
a 2'-deoxycytidine in dna + s-adenosyl-l-methionine = a 5-methyl-2'-deoxycytidine in dna + s-adenosyl-l-homocysteine + h(+)
"DNA-cytosine 5-methylase"
"dna-cytosine 5-methylase"