DNA binding domain 13-21 > < 5-11 aa > < 9-15 aa > < 0-2 aa > Catalytic domain < 0-2 aa > < 8-12 aa > < 16-27 aa > < 0-2 aa > < 16-23 aa > < 9-12 aa > < 3 aa > < 6-7 aa > < 0-2 aa