H3K14

Molecular Basis of Histone H3 Reading and Writing by Legionella pneumophila SET Domain Lysine Methyltransferases

RomA and its highly conserved strain ortholog LegAS4 are SET and ankyrin domain-containing effector proteins of the intracellular bacterial pathogen Legionella pneumophila. These enzymes are secreted into host cells, where they translocate to the nucleus and methylate Lys14 in histone H3 (H3K14), a novel post-translation modification (PTM) that reprograms gene expression and promotes bacterial replication. To elucidate their H3K14 substrate specificity, we determined the crystal structures...