Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 11/4/2009
Publication Date: 11/4/2009
Citation: Pinkelman, R.J., Hughes, S.R., Choi, H., Bang, S.S. 2009. Cloning and expression of Laccase from Trametes versicolor in Saccharomyces cerevisiae using a novel vector system [abstract]. American Institute for Chemical Engineers. Talk 1. p. 1. Interpretive Summary:
Technical Abstract: The long-term goal of this research is to increase efficiency and decrease cost of ethanol fermentation of lignocellulosic feedstocks by combining pre-treatment using laccase enzyme and subsequent fermentation to ethanol through simultaneous saccharification and fermentation paradigms. The first step is to develop a genetically engineered yeast strain capable of degrading lignocellulosic feedstocks to accomplish a consolidated bioprocessing operation. In the study, the Trametes versicolor laccase gene from the vector pBARLAC has been amplified, cloned using the Gateway™ vector system (pENTR DTOPO) and LR Clonase II enzyme mix, and transformed and expressed in an auxotrophic strain of Saccharomyces cerevisiae PJ69-4 diploid, using a small ubiquitin-related modifier (SUMO) vector system with histidine as the selectable marker (pSUMOduo-HIS). Laccase activity from the newly constructed recombinant yeast strain, YT2-2, has been determined in the presence of different substrates.