Term Name: | chromosomal 5-methylcytosine DNA demethylation, oxidation pathway |
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Synonyms: | epigenetic 5-methylcytosine DNA demethylation, oxidation pathway, epigenetic DNA demethylation, oxidation pathway |
Definition: | An epigenetic cytosine DNA demethylation pathway that starts with the enzymatic oxidation of the 5-methylcytosine (5meC) to generate 5-hydroxymethylcytosine (5hmC), which successively converted to 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC). A DNA glycosylase (e. g. TDG) recognizes the intermediate bases 5fC and 5caC and excises the modified base to initiate its replacement with unmethylated cytosine through base excision repair. |
Ontology: | GO: Biological Process [GO:0141167] QuickGO AmiGO |