The overall structure of JMJD6, a new structure of JMJC family. (A) The stereo view of the structure of JMJD6 at present of alpha-KG and Fe2+. The secondary structures are colored as follows: alpha-Helix, red; beta-sheet, yellow; coil, green. (B) The electrostatic surface potentials of JMJD6, positive charged surface is colored red, negative charged surface is colored blue, and neutral surface is colored gray.