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之个氨基酸是两者在级结构上的最佳相对位置，同时体结构的酶活力均高于相应的双体结构，因此确定了有血红素和组氨酸的最佳过氧化物模拟酶DhHP-6（Dh-AlaHisThrValGluLys）。