Abstract
Laccases are multi-copper oxidoreductases (benzenediol:oxygen oxidoreductases, EC 1.10.3.2) able to oxidise a wide variety of phenolic and non-phenolic compounds. They are useful enzymes for a variety of applications, including bioremediation and craft pulp bio-bleaching as the most significant ones. There is a considerable interest to find new laccases through the exploration of biological diversity. Laccases have been found in plants, insects, and bacteria but predominantly in fungi: these enzymes have been documented in about 60 fungal strains. Microbial diversity constitutes a largely unexplored treasure chest with new laccases with a good potential for basic science and biotechnology. At present, due to our inability to cultivate most microbes, the only means of accessing the resources of the microbial world is to harvest genetic resources (“metagenomes”), which can further on be subjected to extensive screening programs. In this chapter, we provide an overview of screening methods to identify laccase-encoding genes from environmental resources.
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Acknowledgements
This research was supported by the Spanish MEC BIO2006-11738, CSD2007-00005 and GEN2006-27750-C-4-E projects. A.B thanks the Spanish MEC for a FPU fellowship. P.N.G. was supported by Grant 0313751K from the Federal Ministry for Science and Education (BMBF) within the GenoMik-Plus initiative.
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Ferrer, M., Beloqui, A., Golyshin, P.N. (2010). Screening Metagenomic Libraries for Laccase Activities. In: Streit, W., Daniel, R. (eds) Metagenomics. Methods in Molecular Biology, vol 668. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-60761-823-2_13
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DOI: https://doi.org/10.1007/978-1-60761-823-2_13
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