Structure-Sensitive RNA Footprinting of Yeast Nuclear Ribonuclease P
| Autor: | David W. Kindelberger, Christopher E. Rohlman, Jae Yong Lee, Anthony J. Tranguch, David R. Engelke |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
RNase P
Molecular Sequence Data Saccharomyces cerevisiae Biology Biochemistry RNase PH Ribonuclease P Nucleic acid secondary structure Ribonucleases Endoribonucleases RNA Catalytic RNase H Phylogeny DNA Primers Ribonucleoprotein Cell Nucleus Base Composition Base Sequence Nuclear RNase P Escherichia coli Proteins Serine Endopeptidases Nucleic Acid Hybridization RNA RNA Fungal RNase MRP biology.protein Nucleic Acid Conformation Endopeptidase K |
| Zdroj: | Biochemistry. 33:1778-1787 |
| ISSN: | 1520-4995 0006-2960 |
| DOI: | 10.1021/bi00173a022 |
| Popis: | Several enzymatic and chemical reagents were used to probe the secondary structure of Saccharomyces cerevisiae nuclear RNase P RNA in the presence and absence of its protein components. Double-stranded regions were detected with RNase V1 and single-stranded regions with RNase ONE (Escherichia coli RNase I). Nucleotides not paired at Watson-Crick positions were monitored with dimethyl sulfate, kethoxal, and 1-cyclohexyl-3-[2-(N-methylmorpholinio)ethyl]carbodiimide p-toluenesulfonate. The results supported most aspects of the previously proposed, phylogenetically-derived RNA secondary structure, although minor refinements allowed incorporation of both the biochemical and phylogenetic data. Digestion of the RNase P protein(s) with proteinase K gave enhanced reactivities to structure probes at selected positions, indicating regions of the RNA made inaccessible by the presence of the protein subunit(s). The regions of RNA protected in the yeast nuclear holoenzyme were considerably more extensive than that seen in the Escherichia coli holoenzyme, consistent with the observation that the protein moiety generally comprises a larger percentage of the RNase P holoenzyme in eukaryotes than in eubacteria. |
| Databáze: | OpenAIRE |
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