Enzyme’s ‘Editing’ Preferences Have Implications for Infertility and Cancer

To "turn off" particular regions of genes or protect them from damage, DNA strands can wrap around small proteins, called histones, keeping out all but the most specialized molecular machinery. Now, new research shows how an enzyme called KDM4B "reads" one and "erases" another so-called epigenetic mark on a single histone protein during the generation of sex cells in mice. The researchers say the finding may one day shed light on some cases of infertility and cancer.   

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