Expression of the Saccharomyces cerevisiae PIS gene encoding phosphatidylinositol synthase in Escherichia coli was achieved by inserting its coding sequence into lacZ on pUC8. The fused gene encoded a phosphatidylinositol synthase whose amino-terminal three amino acids had been replaced by the amino-terminal five amino acids of E. coli beta-galactosidase. E. coli cells bearing this recombinant plasmid produced a significant level of phosphatidylinositol synthase in the presence of a lacZ inducer, isopropylthio-beta-D-galactopyranoside. When the culture medium was supplemented with myo-inositol and isopropylthio-beta-D-galactopyranoside, the cells accumulated a substantial amount of phosphatidylinositol in their membranes. When a saturating level of myo-inositol was added, phosphatidylinositol constituted about 4% of the total phospholipids. Phosphatidylinositol accumulation occurred at the expense of phosphatidylglycerol. The ratio of phosphatidylethanolamine to total acidic phospholipids remained constant. The growth rate of phosphatidylinositol-containing E. coli cells did not differ significantly from that of cells with the normal phospholipid composition.
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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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