We have cloned the gene HXK1 from the dimorphic yeast Yarrowia lipolytica that encodes the unique hexokinase of this yeast. The gene has an intron located 39 base pairs after the A of the first ATG. The putative protein contains a sequence of 40 amino acids which is absent from other known hexokinase sequences. Y. lipolytica strains devoid of hexokinase grew in glucose slower than wild-type. This growth was due to the existence of a glucokinase. The hexokinase from Y. lipolytica substituted effectively for hexokinase II from S. cerevisiae in catabolite repression of invertase. The hexokinases from Schizosaccharomyces pombe or Kluyveromyces lactis were much less effective in this role. The K(m) for glucose and fructose of hexokinase was 0.38 mM and 3.56 mM, respectively. The K(m) of glucokinase for glucose was 0.17 mM. While the hexokinase was strongly inhibited by trehalose-6-phosphate (K(i)=3.6 microM), glucokinase was not affected by this compound.
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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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