Cytosine base is methylated in DNA methylation.
- A biological process called DNA methylation involves the addition of methyl groups to the DNA molecule.
- Without altering the sequence, methylation can modify the activity of a DNA region.
- DNA methylation often suppresses gene transcription when it occurs at a gene promoter.
- DNA methylation is the process of adding a methyl group to DNA, further altering gene function and impacting gene expression.
- Cytosine and adenine, two of the four bases in DNA, are the bases that can be methylated.
- The most frequent DNA methylation in humans is the covalent attachment of a methyl group to the fifth carbon of the cytosine ring, producing the product 5-methylcytosine.
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