Hydrogen Bonds in a sentence

Here, purines form hydrogen bonds to pyrimidines, with adenine bonding only to thymine in two hydrogen bonds, and cytosine bonding only to guanine in three hydrogen bonds.

The two types of base pairs form different numbers of hydrogen bonds, AT forming two hydrogen bonds, and GC forming three hydrogen bonds (see figures, right).

In this case, if two atoms and are adjacent in two hydrogen-bonded β-strands, then they form two mutual backbone hydrogen bonds to each other's flanking peptide groups ; this is known as a close pair of hydrogen bonds.

Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds.

In aqueous solution both hydrogen and hydroxide ions are strongly solvated, with hydrogen bonds between oxygen and hydrogen atoms.

Adenine pairs with thymine (two hydrogen bonds), and guanine pairs with cytosine (stronger: three hydrogen bonds).

Because water may form hydrogen bonds with solute proton donors and acceptors, it may competitively inhibit the formation of solute intermolecular or intramolecular hydrogen bonds.

More specifically, the secondary structure is defined by the patterns of hydrogen bonds formed between amine hydrogen and carbonyl oxygen atoms contained in the backbone peptide bonds of the protein.

Atoms and complexes connected by non-covalent bonds such as hydrogen bonds or ionic bonds are generally not considered single molecules. citation Molecules as components of matter are common in organic substances (and therefore biochemistry).

Also, the water molecule's tendency to form strong hydrogen bonds can interfere with internal hydrogen bonding in complex organic molecules.

Gray dashed lines indicate hydrogen bonds The most ubiquitous and perhaps simplest example of a hydrogen bond is found between water molecules.

However, many of the physical properties of water and ice are controlled by the formation of hydrogen bonds between adjacent oxygen and hydrogen atoms; while it is a weak bond, it is nonetheless critical in controlling the structure of both water and ice.

Hydrogen bonds form between chains, and side chains form above and below the plane of the hydrogen bond network.

Neutron diffraction has shown that the molecular geometry of these complexes is similar to hydrogen bonds, in that the bond length is very adaptable to the metal complex/hydrogen donor system.

The initial theory of hydrogen bonding proposed by Linus Pauling suggested that the hydrogen bonds had a partial covalent nature.

The metal reacts with the water first, breaking the hydrogen bonds in the water and producing hydrogen gas; this takes place faster for the more reactive heavier alkali metals.

These solids consist of the perchlorate anion linked via hydrogen bonds to H 2 O and H 3 O + centers Almlöf, Jan; Lundgren, Jan O.; Olovsson, Ivar "Hydrogen Bond Studies.

This compound is centrosymmetric and has a very short hydrogen bond (114.5 pm ) that is similar to the length in the bifluoride ion HFmain (114 pm). citation In aqueous solution the hydroxide ion forms strong hydrogen bonds with water molecules.

This occurs via the concerted action of the three amino acid residues in the catalytic triad. citation Aspartate hydrogen bonds to the N-δ hydrogen of histidine, increasing the pKa of its ε nitrogen and thus making it able to deprotonate serine.

Phosphodiester bonds are stronger than hydrogen bonds.