= DNA methyltransferase
{c}
A <DNA methyltransferase> transfers a <methyl group> to <DNA>, commonly using S-adenosylmethionine as donor. Different <enzymes> modify different bases or sequence contexts. Some preserve an existing pattern after <DNA replication>, whereas others establish new marks. Consequently, unchanged sequence can coexist with altered <DNA methylation> and <gene regulation>; the modification changes chemical information on the inherited template rather than necessarily changing its base order. <Molecular Biology of the Cell, 4th edition by Bruce Alberts and others>[Chapter 7, DNA Methylation and Epigenetic Inheritance]{ref}
Back to article page
