Active DNA demethylation at enhancers during the vertebrate phylotypic period

Ozren Bogdanović, Ryan Lister, José Luis Gómez-Skarmeta, Michiel Vermeulen and colleagues report widespread DNA demethylation at developmental enhancers during the phylotypic period in zebrafish, Xenopus and mouse embryos. Their findings suggest a conserved role for Tet proteins and active DNA demethylation in the regulation of phylotypic enhancers.