Manganese-independent peroxidase that is able to convert a large number of compounds, but its physiological substrate is not known. In addition to classic peroxidase substrates (e.g. 2,6-dimethoxyphenol), oxidizes dyes such as Reactive Blue 5 and Reactive Black 5. 2 H2O2 + Reactive Blue 5 = 2,2'-disulfonyl azobenzene + 3-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]benzenesulfonate + 2 H(+) + 2 H2O + phthalate 2 a phenolic donor + H2O2 = 2 a phenolic radical donor + 2 H2O Binds 1 heme b (iron(II)-protoporphyrin IX) group non-covalently. Inhibited by imidazole. Dye-decolorizing peroxidase AauDyP1. The value for Dye-decolorizing peroxidase AauDyP2 is 406 nm. Optimum pH is 4.5 for oxidation of 2,6-dimethoxyphenol (PubMed:23111597). Retains 100% activity after incubation at pH 2.5 for 4 hours (PubMed:23111597, PubMed:19756587, PubMed:25153532). Retains >60% activity after incubation at pH 2-11 at 4 degrees Celsius (PubMed:25153532). Retains >60% activity after incubation at pH 3-9 at room temperature (PubMed:25153532). Retains >80% activity after incubation at temperatures up to 60 degrees Celsius for 10 minutes. Retains 50% activity after incubation at 65.5 degrees Celsius for 10 minutes. Activity is lost after incubation at 70 degrees Celsius for 10 minutes. Belongs to the DyP-type peroxidase family.