Interaction energies in hydrogen-bonded purine-pyrimidine triplets.
نویسندگان
چکیده
منابع مشابه
Accurate energies of hydrogen bonded nucleic acid base pairs and triplets in tRNA tertiary interactions
Tertiary interactions are crucial in maintaining the tRNA structure and functionality. We used a combined sequence analysis and quantum mechanics approach to calculate accurate energies of the most frequent tRNA tertiary base pairing interactions. Our analysis indicates that six out of the nine classical tertiary interactions are held in place mainly by H-bonds between the bases. In the remaini...
متن کاملAccurate interaction energies of hydrogen-bonded nucleic acid base pairs.
Hydrogen-bonded nucleic acids base pairs substantially contribute to the structure and stability of nucleic acids. The study presents reference ab initio structures and interaction energies of selected base pairs with binding energies ranging from -5 to -47 kcal/mol. The molecular structures are obtained using the RI-MP2 (resolution of identity MP2) method with extended cc-pVTZ basis set of ato...
متن کاملStudies on purine-pyrimidine hydrogen bonded base pairing by means of absorption and emission sectroscopy.
Procedures are described for measurement of association constants between potentially com plementary purine and pyrimidine bases by hydrogen bonding in non-aqueous medium by means of absorption and emission spectroscopy. The methods require that one of the two constituents be fluorescent and exhibit a long wavelength absorption band not, or only partially, overlapped by the second constituent....
متن کاملVan der Waals-London interactions and the configuration of hydrogen-bonded purine and pyrimidine pairs.
5 Kochakian, C. D., and D. G. Harrison, Endocrinology, 70, 99 (1962). 4Feigelson, M., P. R. Gross, and P. Feigelson, Biochim. Biophys. Acta, 55, 495 (1962). 6 Liao, S., and H. G. Williams-Ashman, these PROCEEDINGS, 48, 1956 (1962). 6Wilson, J. D., Biochem. Biophys. Res. Commun., 8, 175 (1962). 7Kenny, F. T., and F. J. Kull, these PROCEEDINGS, 50, 493 (1963). 8 Korner, A., Biochem. Biophys. Res....
متن کاملProtonated pyrimidine-purine-purine triplex
We have studied a protonated pyrimidine-purine-purine (Py-Pu-Pu) triplex, which is formed between the d(C)nd(G)n duplex and the d(AG)m oligonucleotide as the third strand and carries the CG*A+ protonated base-triads. We have observed such an intermolecular complex between a plasmid carrying the d(C)18 d(G)18 insert and the d(AG)5 oligonucleotide without bivalent cations in 200 mM of Na+ at pH4....
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1967
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.57.6.1663