Lignin degradation and detoxification of lignin-derived products (By similarity). Has highest activity towards ABTS, also active towards ferulic acid and guaiacol, but is not active towards tyrosine, vanillic acid, 2,5-dimethyl aniline, p-anisidine or violuric acid (PubMed:19283431). 4 hydroquinone + O2 = 4 benzosemiquinone + 2 H2O Binds 4 Cu cations per monomer. Inhibited by sodium azide, SDS and mercaptoethanol, but not by 4-hexyl resocinol, L-cysteine and dithiothreitol. Activity is inhibited by the heavy metal ions Cr, W, Sn, Ag(+) and Hg(2+), but not by Pb(2+), Fe(3+), Ni(2+), Li(2+), Co(2+) or Cd(2+). Optimum pH is 3.0 at 70 degrees Celsius with ABTS as substrate, and 6.0 with guaiacol and syringaldazine as substrate. Optimum temperature is 70 degrees Celsius at pH 3.0 with ABTS as substrate. Retains 100% of its activity after 1 hour at 30 degrees Celsius at pH 9.0. Retains more than 60% of its activity after 180 minutes at 60 degrees Celsius at pH 9.0. Retains approximately 50% of its activity after 90 minutes at 70 degrees Celsius at pH 9.0. Homodimer. N-glycosylated; contains 17% carbohydrates. On the 2D-gel the determined pI of this protein is: 5.3, its MW is: 59 kDa. Belongs to the multicopper oxidase family.