Objective: In order to demonstrate the ubiquitination regulation mechanism of histidine transporters.
Methods: By both ubiquitination sites prediction and site-directed mutagenesis, 3 potential ubiquitination sites, K30, K42 and K42 of Hip1p were mutated. These Hip1p mutants were cloned into the ubiquitination detection plasmid for measuring its ubiquitination level change. Effects of these mutants on both cell growth and histidine utilization were measured.
Results: By comparing the relative fluorescence of Hip1p and its mutants, ubiquitination sites mutation reduced the ubiquitination levels of Hip1p. Furthermore, double mutation of ubiquitination sites showed a synergy effect on reducing ubiquitination level. The ubiquitination sites mutants also influenced cell growth and enhance histidine utilization when histidine was used as the sole nitrogen source.
Conclusion: The ubiquitination levels could regulate the histidine metabolism and change the pattern for histidine metabolism, and provide clues for further investigation of regulation mechanisms involved in the amino acids transporter proteins.
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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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