Results 211 to 220 of about 117,633 (252)
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A reconsideration of the possibility of the specific pairing of base pairs
Journal of Theoretical Biology, 1979Abstract The paper discusses in more detail four published crystal structures which were used (McGavin, 1971 a ) in supporting the idea that base pairs in nucleic acid structures might be able to pair with identical base pairs about dyad axes so that specific four-strand structures are formed.
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An Efficient Unnatural Base Pair for a Base-Pair-Expanded Transcription System
Journal of the American Chemical Society, 2005For the site-specific incorporation of artificial components into RNA by transcription, an efficient, unnatural base pair between 2-amino-6-(2-thiazolyl)purine (denoted as v) and 2-oxo(1H)pyridine (denoted as y) was developed. The substrates of y and 5-substituted y were site-specifically incorporated into RNA by T7 RNA polymerase opposite v in ...
Tsuneo, Mitsui +4 more
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On sparse representation in pairs of bases
IEEE Transactions on Information Theory, 2003Summary: In previous work, \textit{M. Elad} and \textit{A. M. Bruckstein} [IEEE Trans. Inf. Theory 48, No. 9, 2558--2567 (2002; Zbl 1062.15001)] have provided a sufficient condition for replacing an \(l_0\) optimization by linear programming minimization when searching for the unique sparse representation.
Arie Feuer, Arkadi Nemirovski
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Microhydration of Guanine Base Pairs
Journal of the American Chemical Society, 2005We report spectroscopy of clusters of guanine base pairs with one and two water molecules. We recorded the vibronic spectra of the mass-selected GG(H2O) and GG(H2O)2 clusters using resonant two photon ionization (R2PI) and we used IR-UV double resonance spectroscopy to obtain ground state IR spectra of these clusters.
Ali, Abo-Riziq +3 more
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RNA Composition and Base Pairing
Science, 1966If RNA may contain a small proportion of adenine-guanine base pairs, these could interrupt the continuity of helical structure in a polynucleotide, in keeping with current theories of RNA structure, and could also account for the experimentally observed tendency for 6-amino bases to equal 6-keto bases and for purines to exceed pyrimidines.
W, Traub, D, Elson
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On Pairing-Based Cryptosystems
2006The pairing technique that uses the (Weil and Tate) pairings over elliptic (or hyperelliptic) curves represents a great breakthrough in cryptography. This paper surveys this new trend in cryptography, and emphasizes the design of efficient cryptographic primitives that are provably secure in the standard model (i.e., without the random oracle model).
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Journal of Biomolecular Structure and Dynamics, 1998
The hydration patterns around the RNA Watson-Crick and non-Watson-Crick base pairs in crystals are analyzed and described. The results indicate that (i) the base pair hydration is mostly "in-plane"; (ii) eight hydration sites surround the Watson-Crick G-C and A-U base pairs, with five in the deep and three in the shallow groove, an observation which ...
Auffinger, Pascal, Westhof, Eric
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The hydration patterns around the RNA Watson-Crick and non-Watson-Crick base pairs in crystals are analyzed and described. The results indicate that (i) the base pair hydration is mostly "in-plane"; (ii) eight hydration sites surround the Watson-Crick G-C and A-U base pairs, with five in the deep and three in the shallow groove, an observation which ...
Auffinger, Pascal, Westhof, Eric
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Journal of Biomolecular Structure and Dynamics, 1996
Three-dimensional structures of a representative set of more than 30 hydrogen-bonded nucleic acids pairs have been studied by reliable ab initio quantum mechanical methods. We show that many hydrogen-bonded nucleic acid base pairs are intrinsically nonplanar, mainly due to the partial sp3 hybridization of nitrogen atoms of their amino groups and ...
J, Sponer +3 more
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Three-dimensional structures of a representative set of more than 30 hydrogen-bonded nucleic acids pairs have been studied by reliable ab initio quantum mechanical methods. We show that many hydrogen-bonded nucleic acid base pairs are intrinsically nonplanar, mainly due to the partial sp3 hybridization of nitrogen atoms of their amino groups and ...
J, Sponer +3 more
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Biochemical and Biophysical Research Communications, 1972
Abstract The interaction of guanosine and 2′-deoxyuridine has been examined by high resolution pmr spectroscopy in DMSO-water mixtures. Evidence is presented for G-U base-pairing in solvent mixtures where the water content is sufficiently high. Downfield shifts were observed for the N(1)-H, NH2 protons of G and the N(3)-H proton of U, suggesting that
S I, Chan +3 more
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Abstract The interaction of guanosine and 2′-deoxyuridine has been examined by high resolution pmr spectroscopy in DMSO-water mixtures. Evidence is presented for G-U base-pairing in solvent mixtures where the water content is sufficiently high. Downfield shifts were observed for the N(1)-H, NH2 protons of G and the N(3)-H proton of U, suggesting that
S I, Chan +3 more
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The biological equilibrium of base pairs
Journal of Molecular Evolution, 1990An inherent feature of double-stranded DNA is the possible replacement of any base pair by another one upon replication. A replication-dependent substitution mutation of a matched base pair requires the temporary formation of a mismatched base pair (mispair).
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