During the pre-rRNA cleavage pathway, the excision of ITS2, a eukaryotic specific insertion, remains the most elusive processing step, even in yeast. Comparison of the ITS2 sequences in different organisms permits to reveal conservative, presumably functionally important elements as well as obtain new information about ITS2 divergence in evolution. We have cloned and sequenced the ITS2 of three lizard species, Agama caucasia (Agamidae), Darevskia armeniaca and Lacerta strigata (Lacertidae) and detected in them a set of specific and conservative structural elements employing secondary structure consensus for vertebrate ITS2. Furthermore, we have performed an alignment and comparative analysis of the ITS2 sequences for the two lizards families. It enables us to propose that modern lizard species formation in evolution was accompanied by ITS2 duplication in the rDNA of their common progenitors.
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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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