The yeast farnesyl diphosphate synthase (FPPS) gene was engineered so as to construct allelic forms giving various activities of the enzyme. One of the substitutions was F96W in the chain length determination region. The other, K197, conserved within a consensus sequence found in the majority of FPP and GGPP synthases, was substituted by R, E and V. An intricate correlation has been found between the FPPS activity, the amount of ergosterol synthesized and cell growth of a mutant strain defective in FPPS. About 40% of wt FPPS activity was sufficient to support normal growth of the mutant. With further decline of FPPS activity (20 down to 3%) the amount of ergosterol remained unchanged at approximately 0.16% (vs dry weight), whereas growth yield decreased and lag times increased. We postulate that, in addition to ergosterol initiating and maintaining growth of yeast cells, FPP and/or its derivatives participate in these processes.
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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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