Pyrimidine nucleobase. Pairs with guanine. Deamination to uracil is a common spontaneous lesion — repaired by uracil DNA glycosylase. 5-methylcytosine is the dominant DNA-methylation mark in vertebrates.
Pyrimidine nucleobase. Pairs with guanine. Deamination to uracil is a common spontaneous lesion — repaired by uracil DNA glycosylase. 5-methylcytosine is the dominant DNA-methylation mark in vertebrates.