The transport and regulation of maltose utilization by Torulaspora delbrueckii, one of the most abundant non-Saccharomyces species present in home-made corn and rye bread dough, has been investigated. A DNA fragment containing the MAL11 gene from T. delbrueckii (TdMAL11) was isolated by complementation cloning in Saccharomyces cerevisiae. DNA sequence analysis revealed the presence of an open reading frame (ORF) of 1884 bp, encoding a 627-amino acid membrane protein, which displays high homology to other yeast maltose transporters. Upstream of TdMAL11, the DNA insert contained a partial ORF (TdMAL12) on the opposite strand, which showed high similarity to the S. cerevisiae MAL12 gene. Sequence analysis, Northern blot and transport measurements indicated that TdMAL11 expression is regulated by the carbon source. Attempts to disrupt TdMAL11 revealed the presence of two functional MAL loci. Disruption of a single copy decreased the V(max) of maltose transport, but not the K(m), whereas the double disruption abolished the uptake of this sugar in T. delbrueckii.
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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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