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Título del libro: Biocatalysis Based On Heme Peroxidases . Peroxidases As Potential Industrial Biocatalysts
Título del capítulo: Enzyme technology of peroxidases: Immobilization, chemical and genetic modification

Autores UNAM:
JOSE RAUNEL TINOCO VALENCIA;
Autores externos:

Idioma:
Inglés
Año de publicación:
2010
Resumen:

An overview of enzyme technology applied to peroxidases is made. Immobilization on organic, inorganic, and hybrid supports; chemical modification of amino acids and heme group; and genetic modification by site-directed and random mutagenesis are included. Different strategies that were carried out to improve peroxidase performance in terms of stability, selectivity, and catalytic activity are analyzed. Immobilization of peroxidases on inorganic and organic materials enhances the tolerance of peroxidases toward the conditions normally found in many industrial processes, such as the presence of an organic solvent and high temperature. In addition, it is shown that immobilization helps to increase the Total Turnover Number at levels high enough to justify the use of a peroxidase-based biocatalyst in a synthesis process. Chemical modification of peroxidases produces modified enzymes with higher thermostability and wider substrate variability. Finally, through mutagenesis approaches, it is possible to produce modified peroxidases capable of oxidizing nonnatural substrates with high catalytic activity and affinity. © 2010 Springer-Verlag Berlin Heidelberg.


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