No peroxidase activity of this enzyme was detected when using dianisidine, DAB and phenylenediamine as electron donor.

• 在以邻联茴香胺、邻苯二胺和二氨基联苯胺作为电子供体进行过氧化物酶的活性测定时发现,同工酶4不显示相应酶活。