This image depicts the chemical structure of cytosine. It shows a hexagonal ring with nitrogen atoms at positions 1 and 3, and a primary amine group attached to carbon 4. The two remaining positions ...

Methylation at the C5 position of cytosine (5-methyl-cytosine ... including the oxidation of thymidine to thymine ribonucleoside by pyrimidine deoxyribonucleoside 2′-hydroxylase, the hydrolysis ...

DNA methylation is a fundamental epigenetic mechanism in which a methyl group is added onto a nucleotide, commonly cytosine. DNA methylation affects many biological processes, including gene ...