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GENE ENGINEERING OF YEASTS FOR THE DEGRADATION OF HAZARDOUS WASTE
Citation:
Loper, L. GENE ENGINEERING OF YEASTS FOR THE DEGRADATION OF HAZARDOUS WASTE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/M-88/001.
Description:
The research examined the structure and function of cytochrome P-450 genes in yeast as a model for gene engineering such as eukaryotic P-450 enzymes for biodegradation of hazardous waste by yeasts. Saccharomyces cerevisiae and Candida tropicalis are two yeasts known to produce major P-450 enzymes. These enzymes were purified and antibodies produced in rabbits were then used in the isolation or characterization of clones containing a P-450 gene from each organism. DNA sequence was determined for the gene isolated from S. cerevisiae and for several hundred bases of chromosomal DNA on each side of the gene, and deletion experiments in the promoter region were conducted. The deduced protein sequence from this gene was compared to those of the other known subfamilies of eukaryotic P-450 genes; the several features identified included a new homology region for these protein sequences. The C. tropicalis gene and its promoter region have been partially sequenced.