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. 1995 Jun;61(6):2408–2413. doi: 10.1128/aem.61.6.2408-2413.1995

Cloning and sequencing of a laccase gene from the lignin-degrading basidiomycete Pleurotus ostreatus.

P Giardina 1, R Cannio 1, L Martirani 1, L Marzullo 1, G Palmieri 1, G Sannia 1
PMCID: PMC167512  PMID: 7793961

Abstract

The gene (pox1) encoding a phenol oxidase from Pleurotus ostreatus, a lignin-degrading basidiomycete, was cloned and sequenced, and the corresponding pox1 cDNA was also synthesized and sequenced. The isolated gene consists of 2,592 bp, with the coding sequence being interrupted by 19 introns and flanked by an upstream region in which putative CAAT and TATA consensus sequences could be identified at positions -174 and -84, respectively. The isolation of a second cDNA (pox2 cDNA), showing 84% similarity, and of the corresponding truncated genomic clones demonstrated the existence of a multigene family coding for isoforms of laccase in P. ostreatus. PCR amplifications of specific regions on the DNA of isolated monokaryons proved that the two genes are not allelic forms. The POX1 amino acid sequence deduced was compared with those of other known laccases from different fungi.

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Selected References

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