The tRNA of most organisms contain modified adenines called cytokinins. Situated next to the anticodon, they have been shown to influence translational fidelity and efficiency. The enzyme that synthesizes cytokinins on pre-tRNA, tRNA isopentenyltransferase (EC 2.5.1.8), has been studied in micro-organisms like Escherichia coli and SaccharomYces cerevisiae, and the corresponding genes have been cloned. We here report the first cloning and functional characterization of a homologous gene from a plant, Arabidopsis thaliana. Expression in S. cerevisiae showed that the gene can complement the anti-suppressor phenotype of a mutant that lacks MOD5, the intrinsic tRNA isopentenyltransferase gene. This was accompanied by the reintroduction of isopentenyladenosine in the tRNA. The Arabidopsis gene is constitutively expressed in seedling tissues.
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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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