We present a novel strategy for increasing the level of functional mammalian cytochrome P450 (Cyt.P450) and NADPH:cytochrome P450 reductase enzymes produced in yeast. A cDNA encoding the rat P450 reductase was modified by the addition of a sequence coding for the N-terminal region of P450 reductase from Saccharomyces cerevisiae. The addition of this hydrophobic tail greatly increased the apparent stability of the reductase protein produced in S. cerevisiae, as compared to the unmodified rat P450 reductase. When the rat hybrid reductase was produced simultaneously with one of two mammalian Cyt.P450s, the rat CYP2B1 or the human CYP2A6, there was a significant increase in the specific activity of each of the Cyt.P450s. The optimization of this approach and its extrapolation to other organisms should lead to a marked improvement in our ability to study and exploit the P450 system.
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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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