DNA methyltransferase (DNMT) family enzymes catalyze the transfer of methyl to DNA. Specifically, DNMT is a conserved cytosine methylase family, which plays a key role in epigenetic regulation. The DNMT family has four members, including DNMT1, Dnmt3a, DNMT3b, and DNMT3l. Different from other DNMTs, DNMT3l does not have any...