Thirteen different yeast tRNAPhe variants with single nucleotide changes in positions 34-37 in the anticodon region were prepared by an enzymatic procedure described previously. Aminoacylation kinetics using purified yeast phenylalanyl-tRNA synthetase revealed that the level of aminoacylation was very different for different sequences inserted. The low level of aminoacylation was the result of a steady state between a slow forward reaction rate and spontaneous deacylation of the product. Aminoacylation kinetics performed at higher synthetase concentrations revealed that substitution at position 34 in tRNAPhe decreased the Km nearly 10-fold but only had a small effect on Vmax. Similar substitutions at positions 35, 36, and 37 had a lesser effect. These data suggest a sequence-specific contact between the anticodon of yeast tRNAPhe and the cognate synthetase.
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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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