Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 66, Issue 4, Pages 1754-1758Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.66.4.1754-1758.2000
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Efficient expression of the dye-decolorizing peroxidase, DyP, from Geotrichum candidum Dec 1 in Aspergillus oryzae M-2-3 was achieved by fusing mature cDNA encoding dyp with the A. oryzae alpha-amylase promoter (amyB). The activity yield of the purified recombinant DyP (rDyP) was 42-fold compared with that of the purified native DyP from Dec 1. No exogenous heme was necessary far the expression of rDyP in A. oryzae. From the N-terminal amino acid sequence analyses of native DyP and rDyP, the absence of a histidine residue in both DyPs, which was considered to be important for heme binding of DyP, was confirmed. These results suggest that rDyP without a typical heme-binding region produced by A. oryzae exhibits a function similar to that of native DyP.
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