We have investigated the role and the kinetic properties of the Hxt5 glucose transporter of Saccharomyces cerevisiae. The HXT5 gene was not expressed during growth of the yeast cells in rich medium with glucose or raffinose. However, it became strongly induced during nitrogen or carbon starvation. We have constructed yeast strains constitutively expressing only Hxt5, Hxt1 (low affinity) or Hxt7 (high affinity), but no other glucose transporters. Aerobic fed-batch cultures at quasi steady-state conditions, and aerobic and anaerobic chemostat cultures at steady-state conditions of these strains were used for estimation of the kinetic properties of the individual transporters under in vivo conditions, by investigating the dynamic responses of the strains to changes in extracellular glucose concentration. The K(m) value and the growth properties of the HXT5 single expression strain indicate that Hxt5 is a transporter with intermediate affinity.
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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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