|
In chemistry and biochemistry one of a number of types of chemical bond. |
|
A hydrogen bond in chemistry and biochemistry is a type of chemical bond between strongly charged dipoles, taking place between molecules. |
|
Hydrogen bonding also plays an important role in determining the three-dimensional structures adopted by proteins and nucleic acids. In these cases, intramolecular hydrogen bonding between groups in the protein or nucleic acid result in folding of the molecule into specific shapesm thus affecting molecular function. /talk? |
|
Hydrogen bonding also plays an important role in determining the three-dimensional structures adopted by proteins and nucleic acids (see [protein folding problem]?) In these cases, intramolecular hydrogen bonding between groups in the protein or nucleic acid result in folding of the molecule into specific shapes thus affecting molecular function. For example, the classical double helix of DNA arises due to the presence of hydrogen bonds between the bases of the nucleic acids in each strand of the helix. In proteins hydrogen bonds form between the backbone oxygens and amide hydrogens. When the spacing of the amino acid residues participating in a hydrogen bond occurs regularly between positions i and i+4, one has an [alpha helix]?. When the spacing is less, between positions i and i+3, then one has a 310 helix. When two strands are joined by hydrogen bonds involving alternating residues on each participating strand, a [beta sheet]? is formed. |
![[Home]](wikipedia.png)