Manganese-independent peroxidase that is able to convert a large number of compounds, but its physiological substrate is not known (PubMed:23111597). In addition to classic peroxidase substrates (e.g. 2,6-dimethoxyphenol), oxidizes dyes such as Reactive Blue 5 (PubMed:23111597). Also degrades beta-carotene (PubMed:18038130). 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 per monomer. Homodimer. Belongs to the DyP-type peroxidase family.