Journal
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
Volume 23, Issue 6, Pages 889-893Publisher
SPRINGER
DOI: 10.1007/s11274-006-9303-5
Keywords
dyestuff; fungi; gene structure; oxidative enzyme; peroxidase; proximal his
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Dye-decolorizing peroxidases (DyP) are atypical peroxidases showing no homology to other fungal peroxidases and lacking the typical heme binding region conserved among plant peroxidase superfamily. The gene and the corresponding cDNA encoding DyP from Pleurotus ostreatus have been identified on the basis of sequence homology analyses. The deduced amino acid sequence shares 43% identity with DyP from the ascomycete Thanatephorus cucumeris Dec 1. Analyses of the protein sequence by homology searches pointed out some properties of the DyP-type peroxidase family, which includes members from bacteria, ascomycete, and basidiomycete fungi. Some amino acids (C374, H379, and Y501 in the P. ostreatus DyP sequence) are proposed as candidates for the heme ligand, providing a basis for further investigations on the structure of the DyP type peroxidase family members.
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