pairsDNA basesconformational elastic degrees of freedomsimplest modelThe interaction between hydrogen bonds and conformational elastic degrees of freedom has been investigated using the simplest model of a double-strand DNA molecule. The hydrogen bonds are described in terms of two-level quantum systems....
The two strands of a DNA molecule are held together by___ bonds between their base pairs. a. amino acid b. phosphate c. hydrogen d. protein DNA: The deoxyribonucleic acid or DNA is a genetic material found in the genome of va...
Hydrogen bonds are found in nucleic acids between base pairs and between water molecules. Hydrogen bonds also form between hydrogen and carbon atoms of different chloroform molecules, between hydrogen and nitrogen atoms of neighboring ammonia molecules, between repeating subunits in the polymer nylon, an...
These are the hydrogen bonds formed between several molecules of the same substance, for example-water \(\left({{{\text{H}}_2}{\text{O}}} \right)\). These are also formed between several molecules of different substances. For example- Water and acetone. When the formation of a hydrogen...
Hydrogen bonds between nitrogenous bases in nucleotides on the two strands of DNA (guanine pairs with cytosine, adenine with thymine) give rise to the double-helix structure crucial to the transmission of genetic information. Hydrogen bonding is one of the popular interactions for the removal of ...
Hydrogen bonds •Resonance assistanceWe challenge the view that the hydrogen bonds in Watson–Crick AT and GC base pairs are in essence electrostatic interactions with substantial resonance assistance from the π electrons. Instead, based on detailed analyses of the hydrogen-bonding mechanis...
bonding between parts of the same macromolecule cause it to fold into a specific shape, which helps determine the molecule's physiological or biochemical role. The double helical structure ofDNA, for example, is due largely to hydrogen bonding between the base pairs, which link one complementary ...
In these G-C~+ base pairs, the nitrogen atoms in the 3-positions of the two cytidine residues on opposite strands share a single proton (Scheme lb). 展开 关键词: cationic hydrogen bonds DNA i-motif NMR spectroscopy quantum chemical calculations ...
The substitution effect on hydrogen-bond energy of the Watson−Crick type base pair formation between 1-methylcytosine and chemically modified 9-methylguanine derivatives was evaluated by an ab initio molecular orbital theory. Introduction of an electron-withdrawing group on the 8-position or on the...
role in the history of structural biology. Both the structure of DNA and of protein a-helices and b-sheets were predicted based largely on the hydrogen bonds these structures form. So understanding hydrogen bonds is clearly important, but much like the hydrophobic effect, hydrogen bonds are ...