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之间隔个氨基酸是两者结构上最佳相对位置，同时结构酶活力均高于相应结构，因此确定了含有亚血红素和组氨酸最佳过氧化物模拟酶DhHP-6（Dh-AlaHisThrValGluLys）。