A pharmaceutical researcher is evaluating a nuclear enzyme inh | USMLE Biochemistry Videos & Books

A pharmaceutical researcher is evaluating a nuclear enzyme inhibitor for the treatment of an inherited disorder. During an experiment, he extracts and purifies nuclear enzymes from skin cells of an affected patient. One of these enzymes is found to catalyze the melhylation of cytosine residues in DNA using S-adenosyl-methionine (SAM) as the methyl donor.