At physiological Mg2+ concentrations, the catalytic core of the bI5 group I intron does not fold into its native structure. In contrast, as judged by the global size, this RNA undergoes structural collapse at Mg 2+ concentrations much lower than required to drive folding of the RNA completely to the native state. The bI5 RNA therefore exists in equilibrium between expanded and collapsed non-native states. The activation energy of RNA folding from the collapsed state to the native state is negligible and the reaction is not accelerated by the addition of urea. This collapsed state is thus distinct from the kinetic traps observed during folding of other large RNAs. The collapsed non-native state forms readily in the case of bI5 RNA and may exist generically prior to assembly of other ribonucleoprotein holoenzymes, such as the ribosome.
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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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