Moreover, it is find that the optimum length between deuterohemin and His is one residue, and all of the monomers are more active than their corresponding dimmers.

Dh与 His之间隔一个氨基酸是两者在一级结构上的对位置，同时体结构的酶高于应的双体结构，因此确定了含有亚血红素和组氨酸的过氧化物模拟酶DhHP-6（Dh-AlaHisThrValGluLys）。