Similarities between intra- and intermolecular hydrogen bonds in RNA kissing complexes found by means of cross-correlated relaxation
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The temp. dependence of NMR relaxation rates was investigated for the backbone of 15N/13C labeled human ubiquitin in the temp. range of 20-50 DegC. The 15N autorelaxation rates give evidence that the potential energy functions for 15N-HN bonds are not quad ...
The bond lengths and dynamics of intra- and intermol. hydrogen bonds in an RNA kissing complex have been characterized by detg. the NMR relaxation rates of various double- and triple-quantum coherences that involve an imino proton and two neighboring nitro ...
Telomeres, the protective caps of eukaryotic chromosomes, are maintained by the enzyme telomerase. This telomere-specific reverse transcriptase (RT) uses a small region of its RNA subunit as template to synthesize telomeric DNA, which is generally G/T rich ...
Pyranosyl-RNA ("p-RNA") is an oligonucleotide system isomeric to natural RNA and composed of the very same building blocks as RNA. Its generational, chem., and informational properties are deemed to be those of an alternative nucleic acid system that cou ...
In my thesis I shall focus on the development of new NMR experimental methods to study structure and internal motions of two kinds of biological polymers, viz. proteins and nucleic acids. I shall investigate the anisotropic local motions of peptide planes ...
A new NMR method has been designed for the measurement of the longitudinal relaxation rates of both donor and acceptor nitrogen-15 nuclei in Watson-Crick base pairs in 15N-enriched nucleic acids. The expt. was applied to a 22-nucleotide RNA hairpin. The le ...
By automated synthesis, we prepd. hybrid oligonucleotides consisting of covalently linked RNA and p-DNA sequences (p-DNA = 3'-deoxyribopyranose (4'->2')-oligonucleotides). The pairing properties of corresponding hybrid duplexes formed from fully complement ...
Within this project methods for the preparation of the unnatural nucleic acids 3'-O-Methyl-pRNA and pDNA (3'-Desoxy-pRNA) were developed. The pairing properties of these two systems have been examined and compared with that of pRNA. All of the three system ...
Our group is working on the development of reliable access to biol. relevant, long, and modified RNA sequences. Here, we briefly present the chem. synthesis of such sequences with 2'-O-triisopropylsilyloxymethyl (= 2'-O-tom) protected ribonucleoside phosph ...
The reactivity of (E)- and (Z)-1-fluorobuta-1,3-diene ((E)- and (Z)-11), 2-fluorobutadiene (12). (E)and (Z)-1-(fluoromethylidene)-2-methylidenecyclohexane ((E)- and (Z)-13) toward SO2 has been explored and compared with that of (Z)- and (E)-1-(fluoromethyl ...