5-Methylcytosine 是一种存在于真核 DNA 中的甲基化核苷酸碱基。它是由 DNA 甲基转移酶作用形成的表观遗传修饰。

5-Methylcytosine is a methylated nucleotide base found in eukaryotic DNA. In animals, the DNA methylation of cytosine to form 5-methylcytosine is found primarily in the palindromic sequence CpG. In plants, the methylated sequence is CpNpGp, where N can be any base. 5-Methylcytosine is an epigenetic modification formed by the action of DNA methyltransferases. In bacteria, 5-methylcytosine can be found at a variety of sites and is often used as a marker to protect DNA from being cut by native methylation-sensitive restriction enzymes.

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C5H7N3O

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