Recombinant yeast cells intracellularly overexpressing three different enzymes were permeabilized with alcohol under various conditions. The effects of enzyme stability in alcohol and enzyme molecular weight on the activities of permeabilized cells and enzyme leakage during incubation were examined. Saccharomyces cerevisiae YPH250 overexpressing glyoxalase I (GloI), S. cerevisiae MT8-1 overexpressing isocitrate lyase (ICL), and Pichia pastoris GS115 overexpressing beta-galactosidase (beta-gal) were used as model recombinant yeast systems. In all cases, the percentage of alcohol used for the treatment significantly affected the activity of permeabilized whole cell biocatalysts; cells showed high activity when treated with 40% isopropyl alcohol. The activity of whole cell biocatalysts was also significantly affected by the stability of the enzyme in alcohol solution; permeabilized yeast cells overexpressing ICL, which had low stability, showed rather low activity. Although the enzyme leakage from permeabilized cells was rather low in all cases, the molecular weight of the enzyme appeared to affect the extent of enzyme leakage during incubation. Permeabilized cells of P. pastoris overexpressing beta-gal (540 kDa) retained particularly high activity during incubation and could be used as an immobilized whole cell biocatalysts.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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