1.11.2.1 analysis use of enzyme for biosensor applications. The substrate spectrum overlaps with those of cytochrome P450s and plant peroxidases which are relevant in environmental analysis and drug monitoring. After immobilization at a chitosan-capped gold-nanoparticle modified glassy carbon electrode, enzyme displays a pair of redox peaks with a midpoint potential of -278.5 mV vs. AgCl/AgCl at 1 M KCl for the Fe2+/Fe3+ redox couple of the heme-thiolate-containing protein. The signal is generated by the reduction of electrode-active reaction products e.g., p-benzoquinone and p-quinoneimine with electroenzymatic recycling of the analyte 723929 1.11.2.1 additional information Agrocybe aegerita peroxygenase is a particularly potent biocatalyst that fills the gap between cytochrome P450s and common heme peroxidases 711843