page_title: DNA methyltransferase
hierarchical_section_title: DNA methyltransferase
caption_attribution_description: English: 3D structure of protein deposited with PDB code 2ar0.
context_page_description: In biochemistry, the DNA methyltransferase family of enzymes catalyze the transfer of a methyl group to DNA. DNA methylation serves a wide variety of biological functions. All the known DNA methyltransferases use S-adenosyl methionine as the methyl donor.
context_section_description: In biochemistry, the DNA methyltransferase (DNA MTase, DNMT) family of enzymes catalyze the transfer of a methyl group to DNA. DNA methylation serves a wide variety of biological functions. All the known DNA methyltransferases use S-adenosyl methionine (SAM) as the methyl donor.
caption: crystal structure of type i restriction enzyme ecoki m protein (ec 2.1.1.72) (m.ecoki)
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