Fatty acid synthetase and acetyl CoA carboxylase mutants have been used to study several aspects of fatty acid biosynthesis in yeast: the contribution of the various enzymes of fatty acid biosynthesis and modification to the overall cellular fatty acid composition, the mechanism of fatty acyl chain elongation in yeast, the molecular structure and the reaction mechanism of the fatty acid synthetase complex and the genetic control of the biosynthesis of this multi-enzyme system. Genetic and biochemical evidence suggest an alpha6beta6 molecular structure of this complex, where alpha and beta are multifunctional proteins comprising, respectively, 3 and 5 of the various fatty acid synthetase component functions. The two subunits alpha and beta are synthesized on two different, unliked genes, fas 2 and fas 1. The biosynthesis of both is coordinated. The various component enzyme activities reside in distinct domains on the multifunctional chains. While most domains appear to be functionally independent, the three acyl transferases exhibit extensive mutual interactions. It is suggested that the biosynthesis of a multifunctional protein is favoured on the grounds of kinetics and regulation as compared with the formation of a complex of the corresponding individual enzymes.
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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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