Assembly of Evolved Ligninolytic Genes in Saccharomyces Cerevisiae

Overview

Journal Bioengineered

Date 2014 May 17

PMID 24830983

Citations 3

Authors

David Gonzalez-Perez

Miguel Alcalde

Affiliations

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Abstract

The ligninolytic enzymatic consortium produced by white-rot fungi is one of the most efficient oxidative systems found in nature, with many potential applications that range from the production of 2nd generation biofuels to chemicals synthesis. In the current study, two high redox potential oxidoreductase fusion genes (laccase -Lac- and versatile peroxidase -Vp-) that had been evolved in the laboratory were re-assembled in Saccharomyces cerevisiae. First, cell viability and secretion were assessed after co-transforming the Lac and Vp genes into yeast. Several expression cassettes were inserted in vivo into episomal bi-directional vectors in order to evaluate inducible promoter and/or terminator pairs of different strengths in an individual and combined manner. The synthetic white-rot yeast model harboring Vp(GAL1/CYC1)-Lac(GAL10/ADH1) displayed up to 1000 and 100 Units per L of peroxidase and laccase activity, respectively, representing a suitable point of departure for future synthetic biology studies.

Citing Articles

Directed evolution of the aryl-alcohol oxidase: Beyond the lab bench.

Vina-Gonzalez J, Alcalde M Comput Struct Biotechnol J. 2020; 18:1800-1810.

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Mate D, Alcalde M Microb Biotechnol. 2016; 10(6):1457-1467.

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