The ABCE1 gene is a member of the ATP-binding cassette (ABC) multigene family and is composed of two nucleotide binding domains and an N-terminal Fe-S binding domain. The ABCE1 gene encodes a protein originally identified for its inhibition of ribonuclease L, a nuclease induced by interferon in mammalian cells. The protein is also required for the assembly of the HIV and SIV gag polypeptides. However, ABCE1 is one of the most highly conserved proteins and is found in one or two copies in all characterized eukaryotes and archaea. Yeast ABCE1/RLI1 is essential to cell division and interacts with translation initiation factors in the assembly of the pre-initiation complex. We show here that the human ABCE1 protein is essential for in vitro and in vivo translation of mRNA and that it binds to eIF2alpha and eIF5. Inhibition of the Xenopus ABCE1 arrests growth at the gastrula stage of development, consistent with a block in translation. The human ABCE1 gene contains 16 introns, and the extremely high degree of amino acid identity allows the evolution of its introns to be examined throughout eukaryotes. The demonstration that ABCE1 plays a role in vertebrate translation initiation extends the known functions of this highly conserved protein. Translation is a highly regulated process important to development and pathologies such as cancer, making ABCE1 a potential target for therapeutics. The evolutionary analysis supports a model in which an ancestral eukaryote had large number of introns and that many of these introns were lost in non-vertebrate lineages.
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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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