Analysis of molekular interactions in ribosomal RNA and ribozymes
Trans Hoogsteen/Sugar Edge (Ho/SE) pairing patterns are of key importance at stabilizing loop geometries in RNA. The goal of this thesis is to provide a detailed quantum chemical characterization of this base pair family both in gas-phase and aqueous solution. DFT-optimized geometries and RI-MP2 int...
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| Typ dokumentu: | VŠ práce nebo rukopis |
| Jazyk: | Angličtina |
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2008.
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| On-line přístup: | http://is.muni.cz/th/175116/prif_b/ |
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| 072 | 7 | |a 577 |x Biochemie. Molekulární biologie. Biofyzika |2 Konspekt |9 2 | |
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| 242 | 1 | 0 | |a Studium molekulových interakcí v ribosomální RNA a ribozymech |y cze |
| 245 | 1 | 0 | |a Analysis of molekular interactions in ribosomal RNA and ribozymes |h [rukopis] / |c Arnošt Mládek. |
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| 520 | 2 | 9 | |a Trans Hoogsteen/Sugar Edge (Ho/SE) pairing patterns are of key importance at stabilizing loop geometries in RNA. The goal of this thesis is to provide a detailed quantum chemical characterization of this base pair family both in gas-phase and aqueous solution. DFT-optimized geometries and RI-MP2 interaction energies is reported for the 10 crystallographically identified members of the family. Balance of intermolecular stabilizing forces in the trans Ho/SE base pairs are very similar to that of trans Watson-Crick/Sugar edge (WC/SE) base pairs. Thus, albeit the electron correlation component remarkably contributes to the stabilization, its relative importance is noticeably lower than in the cis WC/SE or cis and trans SE/SE edge base pairs. In two pairs, i.e. C/rC and G/rG, the electrostatic component is clearly superior to the correlation contribution, due to the fortunate orientation of the molecular dipoles of the component bases. In contrast, in the A/rG pair, which is the most stable. |9 eng |
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