Efficient and specific transporters may enhance pentose uptake and metabolism by Saccharomyces cerevisiae. Eight heterologous sugar transporters were characterized in S. cerevisiae. The transporter Mgt05196p from Meyerozyma guilliermondii showed the highest xylose transport activity among them. Several key amino acid residues of Mgt05196p were suggested by structural and sequence analysis and characterized by site-directed mutagenesis. A conserved aromatic residue-rich motif (YFFYY, position 332-336) in the seventh trans-membrane span plays an important role in D-xylose transport activity. The phenyl ring of the residue at position 336 may take the function to prevent D-xylose from escaping during uptake. F432A and N360S mutations enhanced the D-xylose transport activities of Mgt05196p. Furthermore, mutant N360F specifically transported D-xylose without any glucose-inhibition, high lighting its potential application in constructing glucose-xylose co-fermentation strains for biomass refining.
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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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| Evidence ID | Analyze ID | File | Description |
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