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Beschreibung

DNA (cytosine-5)-methyltransferase 3B (Dnmt3B) is one of three mammalian enzymes that catalyze the addition of a methyl group to the 5&rsquo, carbon of cytosine residues in CpG dinucleotides. The Dnmt3b enzyme is involved in de novo methylation and the establishment of genome-wide DNA methylation patterns during development. DNA methylation has been linked to chromosome stability and gene expression in somatic cells, and to parental imprinting and X-chromosome inactivation in germ cells. Several studies have indicated that DNA methylation patterns are altered in various cancers.