Posttranslational N-terminal protein arginylation, mediated by Arg-tRNA-protein transferase 1 (ATE1), is essential for cardiovascular development and angiogenesis in mammals but is nonessential in yeast. Evidence suggests that many proteins are arginylated in vivo in both mammals and yeast; however, in yeast, N-terminal arginylation can occur only on proteins bearing an N-terminal Asp or Glu, whereas in mammals, N-terminal Cys residues are also arginylation targets, suggesting that Cys arginylation contributes to the essential role of ATE1 in mammals. To date, all of the characterized forms of ATE1 in yeast and mammals have been shown to arginylate only Asp and Glu, leaving open to speculation whether Cys arginylation is possible only through other components of mammalian arginylation machinery and whether Cys-specific forms of Arg-transferase exist in mammals. Here, we report the identification of two forms of Arg-transferase in mice that are specific for N-terminal Cys. We also show that the two previously identified mammalian forms of ATE1 can arginylate Cys-containing substrates in addition to Asp- and Glu-containing substrates. This finding provides insights into the significance of Cys-specific protein arginylation in mammals and suggests possibilities of the determinants of substrate specificity within the ATE1 molecule.
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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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