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  • Title: Different fungal manganese-oxidizing peroxidases: a comparison between Bjerkandera sp. and Phanerochaete chrysosporium.
    Author: Palma C, Martínez AT, Lema JM, Martínez MJ.
    Journal: J Biotechnol; 2000 Feb 17; 77(2-3):235-45. PubMed ID: 10682282.
    Abstract:
    Two manganese-oxidizing peroxidases differing in glycosylation degree were purified from fermenter cultures of Bjerkandera sp. They were characterized and compared with the three manganese-oxidizing peroxidase isoenzymes obtained from the well-known ligninolytic fungus Phanerochaete chrysosporium. All the enzymes showed similar molecular masses but those from P. chrysosporium had less acidic isoelectric point. Moreover, the latter strictly required Mn2+ to oxidize phenolic substrates whereas the Bjerkandera peroxidases had both Mn-mediated and Mn-independent activity on phenolic and non-phenolic aromatic substrates. Taking into account these results, and those reported for Bjerkandera adusta and different Pleurotus species, we concluded that two different types of Mn(2+)-oxidizing peroxidases are secreted by ligninolytic fungi.
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