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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Curr Opin Cell Biol. 2013 Mar 14;25(2):152–161. doi: 10.1016/j.ceb.2013.02.014

Figure 1.

Figure 1

The potential pathways of DNA demethylation mediated by TET proteins. In addition to the active pathways shown (see text for details), demethylation may occur passively through inhibition of maintenance methylation. Moreover, the methylcytosine oxidation products generated by TET proteins, like 5hmC, may function as stable marks that recruit chromatin “readers”,“writers’ or “erasers”.