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World population is expected to increase from 6.5 billion in 2005 to 8.3 billion by 2030. Simultaneously, the average per capita income could rise from USD 5,900 in 2005 to USD 8,600, a 46% increase. A larger population with increased acquisitive power, along with the challenge of developing environmentally sustainable processes will be the driving force for the emergence of bioeconomy. According...
All currently available gene sequences of heme peroxidases can be phylogenetically divided in two superfamilies and three families. In this chapter, the phylogenetics and genomic distribution of each group are presented. Within the peroxidase–cyclooxygenase superfamily, the main evolutionary direction developed peroxidatic heme proteins involved in the innate immune defense system and in biosynthesis...
This chapter begins with a description of the main structural features of heme peroxidases representative of the two large superfamilies of plant–fungal–bacterial and animal peroxidases, and the four additional (super)families described to date. Then, we focus on several fungal peroxidases of high biotechnological potential as industrial biocatalysts. These include (1) ligninolytic peroxidases from...
Redox potential of peroxidases greatly influences the range of oxidizable substrates: in principle, peroxidases may only catalyze the oxidation of substrates with lower redox potential. There is substantial information on the factors that modulate the redox potential of heme proteins. Both theoretical and experimental evidence highlight the most significant contributions arising from the interaction...
The hemoprotein peroxidases produce a reactive intermediate, Compound I, whose reactions are controlled by the protein environment. In conventional peroxidases with a histidine iron ligand, access to the Compound I ferryl species is restricted by the protein, favoring the transfer of single electrons from the substrate to an exposed heme edge. If the protein has a suitably placed oxidizable residue...
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