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Natural and recombinant fungal laccases for paper pulp bleaching Inra
Sigoillot, C.; RECORD, E.; Belle, V.; ROBERT, J.L.; LEVASSEUR, A.; Punt, P.J.; Van Den Hondel, C.A.M.J.J.; Fournel, A.; Sigoillot, J.C.; ASTHER, M..
Three laccases, a natural form and two recombinant forms obtained from two different expression hosts, were characterized and compared for paper pulp bleaching. Laccase from Pycnoporus cinnabarinus, a well known lignolytic fungus, was selected as a reference for this study. The corresponding recombinant laccases were produced in Aspergillus oryzae and A. niger hosts using the lacI gene from P. cinnabarinus to develop a production process without using the expensive laccase inducers required by the native source. In flasks, production of recombinant enzymes by Aspergilli strains gave yields close to 80 mg l–1. Each protein was purified to homogeneity and characterized, demonstrating that the three hosts produced proteins with similar physico-chemical...
Tipo: Journal Article Palavras-chave: PULPE DE PAPIER; BIOTECHNOLOGIE INDUSTRIELLE; PROPRIETE PHYSICOCHIMIQUE LACCASE; RECOMBINANT PROTEIN.
Ano: 2004 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007a0177074&uri=/notices/prodinra1/2010/09/
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