Site-specific DNA-methyltransferase (cytosine-N4-specific)

Site-specific DNA-methyltransferase (cytosine-N4-specific) (, modification methylase, restriction-modification system; DNA[cytosine-N4]methyltransferase; m4C-forming MTase; S-adenosyl-L-methionine:DNA-cytosine 4-N-methyltransferase) is an enzyme with systematic name S-adenosyl-L-methionine:DNA-cytosine N4-methyltransferase. This enzyme catalyses the following chemical reaction:

S-adenosyl-L-methionine + DNA cytosine S-adenosyl-L-homocysteine + DNA N4-methylcytosine

This is a large group of enzymes.

See also DNA methyltransferase

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