Glucokinase gene (HPGLK1) was cloned from a methylotrophic yeast Hansenula polymorpha by complementation of glucose-phosphorylation deficiency in a H. polymorpha double kinase-negative mutant A31-10 by a genomic library. An open reading frame of 1416 nt encoding a 471-amino-acid protein with calculated molecular weight 51.6 kDa was characterized in the genomic insert of the plasmid pH3. The protein sequence deduced from HPGLK1 exhibited 55 and 46% identity with glucokinases from Saccharomyces cerevisiae and Aspergillus niger, respectively. The enzyme phosphorylated glucose, mannose and 2-deoxyglucose, but not fructose. Transformation of HPGLK1 into A31-10 restored glucose repression of alcohol oxidase and catalase in the mutant. Transformation of HPGLK1 into S. cerevisiae triple kinase-negative mutant DFY632 showed that H. polymorpha glucokinase cannot transmit the glucose repression signal in S. CEREVSIAE: synthesis of invertase and maltase in respective transformants was insensitive to glucose repression similarly to S. cerevisiae DFY568 possessing only glucokinase.
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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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