Mechanism and stem-cell activity of 5-carboxycytosine decarboxylation determined by isotope tracing.

Eraserhead: Stem cells seem to erase epigenetic information by decarboxylation of the newly discovered epigenetic base 5-carboxycytosine (caC; see picture). This reaction is likely to involve a nucleophilic attack of the C5-C6 double bond.

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