1.The acetylation and deacetylation of histone is charged by a pair of protea se with antistatic function on each other,which are histone transacetylase and histone deacetylase.

1.组蛋白化和化由对功拮抗的蛋白酶——组蛋白基转移酶和组蛋白化酶负责。