Self-splicing group II introns catalyze their own excision from pre-RNAs, thereby joining the flanking exons. The introns can be released in a lariat or linear form. Lariat introns have been shown to reverse the splicing reaction; in contrast, linear introns are generally believed to perform no or only poor reverse splicing. Here, we show that a linear group II intron derived from ai5gamma can reverse the second step of splicing with unexpectedly high efficiency and precision. Moreover, the linear intron generates dramatically more reverse-splicing product than its lariat equivalent. The finding that linear group II introns can readily undergo the critical first step of mobility by catalyzing efficient reverse splicing into complementary target molecules demonstrates their innate potential for mobility and transposition and raises the possibility that reverse splicing by linear group II introns may have played a significant role in certain forms of intron mobility and lateral gene transfer during evolution.
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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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