6533b7d0fe1ef96bd125b909
RESEARCH PRODUCT
Arthropod 7SK RNA
Ivo L. HofackerAxel MosigAxel MosigPeter F. StadlerAndreas GruberCarsten KilgusCarsten KilgusWolfgang HennigWolfgang Hennigsubject
GeneticsbiologyComputational BiologyGene Expression7SK Small Nuclear RNAPrp24RNA polymerase IINon-coding RNARNA polymerase IIIConserved sequenceDrosophila melanogasterEvolutionary biologyRNA Small NuclearSequence Homology Nucleic AcidDatabases GeneticGeneticsbiology.proteinAnimalsNucleic Acid ConformationsnRNPArthropodsMolecular BiologyEcology Evolution Behavior and SystematicsSmall nuclear RNAdescription
The 7SK small nuclear RNA (snRNA) is a key player in the regulation of polymerase (pol) II transcription. The 7SK RNA was long believed to be specific to vertebrates where it is highly conserved. Homologs in basal deuterostomes and a few lophotrochozoan species were only recently reported. On longer timescales, 7SK evolves rapidly with only few conserved sequence and structure motifs. Previous attempts to identify the Drosophila homolog thus have remained unsuccessful despite considerable efforts. Here we report on the discovery of arthropod 7SK RNAs using a novel search strategy based on pol III promoters, as well as the subsequent verification of its expression. Our results demonstrate that a 7SK snRNA featuring 2 highly structured conserved domains was present already in the bilaterian ancestor.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-06-21 | Molecular Biology and Evolution |