Thermophilic laccases, DNA sequences encoding them and their use in paper manufacture

摘要

The specification describes DNA sequences which code for proteins with thermophilic laccase activity, comprising one of the DNA sequences (SEQ ID NO:1, SEQ ID NO:2). The specification also describes the expression of these DNA sequences, thermopilic laccases coded by them and their use in delignifying cellulose, depolymerizing high-molecular aggregates, de-inking waste paper, polymerising aromatic compounds in waste liquids, especially waste liquids from cellulose bleaching, oxidising colourants and activating colourants to produce pigments.