Lignin degradation and detoxification of lignin-derived products (By similarity). Active against a variety of substrates including the benzenediols hydroquinone and catechol, the benzenetriol pyrogallol, the methoxy-substituted phenol 2-methylcatechol, the aromatic diamine N,N-dimethyl-1,4-phenylenediamine and the nonphenolic heterocyclic compound ABTS (PubMed:23093860). Shows highest degradative activity towards hydroquinone with lower activity against ABTS and N,N-dimethyl-1,4-phenylenediamine (PubMed:23093860). Activity towards pyrogallol, catechol and 2-methyl-catechol is considerably attenuated (PubMed:23093860). Shows no activity against tyrosine (PubMed:23093860). 4 hydroquinone + O2 = 4 benzosemiquinone + 2 H2O Binds 4 Cu cations per monomer (By similarity). Copper is inhibitory at concentrations of 1.25-5.0 mM (PubMed:23093860). Activity is enhanced by Al(3+) at concentrations of 1.25-2.5 mM (PubMed:23093860). Activity is reduced in the presence of Cu(2+), Hg(2+), Pb(2+), Fe(3+) and EDTA at concentrations of 1.25-5.0 mM (PubMed:23093860). Activity is not significantly affected by the presence of cations such as K(+), Ca(2+), Mg(2+), Mn(2+) or Zn(2+) at concentrations of 1.25-5.0 mM (PubMed:23093860). Optimum pH is 5.2 with ABTS as substrate. Optimum pH is 6.8 with hydroquinone as substrate. Optimum temperature is 30 degrees Celsius. Activity declines sharply as the temperature is increased from 40 to 80 degrees Celsius and is abolished at 80 degrees Celsius. Displays antiproliferative activity against a number of human tumor cell lines and inhibitory activity against HIV-1 reverse transcriptase. Belongs to the multicopper oxidase family.