perturbation theory/ electron bonded cytosine-guanine complexquantum chemical calculationsguanine-cytosine anionvertical detachment energy calculationsMP2 methodgeometry optimizationsneutral structureIn this work, we have performed quantum chemical calculations on a new form of the guanine鈥揷ytosine anion, in ...
In contrast to the previously reported lowest-energy deprotonated base pair structure G·[C–H1] that consists of H-bonded neutral guanine and N1-deprotonated cytosine, we found that proton transfer from guanine N1 to cytosine N3 within G·[C–H1] (or 9MG·[C–H1]) leads to another ...
Cytosine forms a base pair with guanine in both DNA and RNA molecules. Nevertheless, it possesses inherent instability, rendering it susceptible to spontaneous deamination, resulting in the conversion to uracil [4]. If left unaddressed, this circumstance has the potential to result in a point ...
Doubly hydrogen bonded, "reverse WatsonCrick" thymineadenine base pairs make possible the formation of parallel-stranded DNA double helices. Although the presence of guanine and cytosine reduces the stability of parallel-stranded DNA, the rather modest experimentally determined reduction in stability (less...
guanine–cytosine pair is several times greater than that for the adenine–thymine (uracil) pair, but in both cases the mixed complex is preferred to a mixture of self-dimers; mixtures of non-complementary bases show no association, although mixed hydrogen-bonded pairs can in principle be drawn...
How can four guanine bases be held together to form a planar structure held together by hydrogen bonds? Draw the structure of these four hydrogen bonded guanine bases. Are these Watson-Crick hydrogen bonds or not? Which type of bond occur between bases in a DNA base-pair? ...
Cytosine is critical in the structure of both DNA and RNA, where it participates in base pairing through hydrogen bonds with guanine. Its role in the central dogma of molecular biology—transcription and translation—is central to the encoding of genetic information. Cytosine can be derived ...
The guanidinium groups of R111 and R133, which are held directly above the C5 methyl groups, are hydrogen bonded to the guanine bases of G9 and G34, respectively. The 2fo-fc electron density map covering the 5C methyl group recognition region is contoured at sigma level 1.6. All residues...
A. guanine B. cytosine C. uracil D. adenine The Structure of Deoxyribonucleic Acid (DNA) Deoxyribonucleic Acid (DNA). This is a double-stranded structure that has nucleotides and is bonded together by covalent bonds between the deoxyribose and the phosphatic groups. The DNA he...
NH stretching vibrations of hydrogen-bonded guanosinecytidine (G·C) base pairs in chloroform solution are studied with linear and ultrafast nonlinear infr... Ming,Yang,ukasz,... - 《Journal of Physical Chemistry B》 被引量: 55发表: 2011年 Quantum-mechanical calculation of the intensity distribu...