How To Use Hydrogen bond In A Sentence
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The bonding models of large π bond, hydrogen bond, HOMO and LUMO are discussed.
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This tertiary structure is stabilized by salt bridges, intramolecular hydrogen bonds, and four disulfide bridges.
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Moreover, the formation of lipid rafts is thought to be favored by hydrogen bonding among the oligosaccharides in sphingolipids.
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The quaternary nitrogen atom in lycobetaine plays an important role in the formation of hydrogen bonds between the compound and the oligonucleotide.
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With regard to this solvent selectivity, acetonitrile is completely miscible in water but forms very weak hydrogen bonds in its capacity as a hydrogen bond acceptor.
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The C13 Sγ sulfhydryl group hydrogen bonds to hydroxyl side chain of residue S10 and makes van der Waals contacts with residues R92 and P93.
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As hydrogen bonds are thermally labile a rise in T reduces the number of bonds and causes eventual phase separation.
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The first contact is the mainchain-mainchain hydrogen bonding between the carbonyl oxygen of lysine at position 2 and the amide proton of E. For convenience, we termed the internuclear distance responsible for this contact, d1.
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The centers of corresponding ellipsoids are close, in agreement with well-known restrictions on the hydrogen bonding of electronegative atoms.
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Hydroxyl groups in the cellulose molecule cause rayon to absorb water; in the dry state the fibers are hydrogen bonded, and dry rayon retains its strength even at high temperatures.
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Such structures appear to promote tight water association through internal hydrogen bonding.
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Such a low pH value suggests that at higher pH the protonation of a carboxylate, forming a hydrogen bond, would break this interaction leading to a destabilization and a change in the heme pocket crucial to catalysis.
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As has been commented on earlier, self-assembly of the cyclic peptides into a synthetic channel proceeds through the formation of eight intersubunit backbone-backbone hydrogen bonds.
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This absence of correlation should warn against using CO temperature coefficients of chemical shifts as indicators of a hydrogen bond acceptor.
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Placing the probe coincident with crystallographic water molecules suggests that they are sometimes located within small pockets that provide a sterically stable environment irrespective of hydrogen bonding considerations.
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This result indicates also that urea is likely to destabilize the formation of hydrogen bonds.
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Acetonitrile is completely miscible with water, but is only a hydrogen bond acceptor and a very weak one at that.
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These unusual chemical shifts for imino and amino protons are indicative of novel hydrogen bonding.
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Protein residues in contact are also shown, with hydrogen bonds as dotted lines.
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The association of the peptide amide hydrogens with the lipid phosphoryl oxygens was also investigated in order to find out if there was any possibility of long-term hydrogen bonding between these atoms.
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The transient nature of the binding may be because this sequence is recognized on account of its structure without additional hydrogen bonding contacts.
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The small rings are made to move around the big ring by bathing them in light of different wavelengths; the light energy fuels the photochemical reaction to break the hydrogen bonds.
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Although the discussion above has been limited to the side chains, the peptide backbone also forms hydrogen bonds with the DPPC acceptor headgroups.
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Occasionally during the simulated time some of the hydrogen bonds characteristic of the starting conformer were broken and hydrogen bonds typical of other conformers were formed for short time intervals.
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Hydrogen bonds are the perfect strength to hold DNA together under most situations, but are weak enough to form and break readily to enable DNA to untwine for replication.
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Distortions due to the formation of hydrogen bonds are usually smaller than those due to co-ordination to metal ions.
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Solubility can be affected by such processes as hydrogen bonding between the solute and solvent.
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The dotted red lines are hydrogen bonds between amide and carbonyl groups in the peptide bonds.
Pauling's Alpha-helix
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The energy of this hydrogen bonding is comparable to that of the torsion-angle strain.
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The active area of ENOLASE will potentially exist multi - hydrogen bond of donor and acceptor.
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It therefore seems that both DNA structure and hydrogen bonding to guanine contribute towards sequence recognition.
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Water gets conformers to make and accept available hydrogen bonds plus a conformer with no interaction with the protein, representing water in bulk solvent.
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The reason behind this is that salt effectively dehydrates the polymer by disruption of hydrogen bonding with water, similar to the effect of increasing temperatures.
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Interesting ... but dna and rna are a bit harder to make, than boiling water and hoping that it the hydrogen bonds don't rip apart the structure (not to mention the possible de-naturing of the structures due to the boiling temperature (it happens to bacteria when boiled).
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If the amines were acting as the hydrogen bond acceptors, the bimolecular quenching constants would be expected to increase with basicity of the amines, i.e. for amines with lower pK b values.
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Therefore, it is not possible to provide any quantitative measure of the energy of solvation due to dipolar solvation and hydrogen bonding interaction.
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A hydronium ion, however, disrupts this structure because it can accommodate a maximum of three hydrogen bonds.
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With N-acetylgalactosamine, the acetamide group on the galactose ring can bring one more hydrogen bond, which can contribute to the enthalpy of the reaction and affinity values, and then titration was possible.
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Helicases are protein motors that use the energy of NTP hydrolysis to dissociate the hydrogen bonding between the nucleic acid duplexes and also to disrupt other non-covalent interactions between complementary base pairs.
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Hydrogen bonding also plays an important role in determining the three-dimensional structures adopted by proteins and nucleic acids.
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It therefore seems that both DNA structure and hydrogen bonding to guanine contribute towards sequence recognition.
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The molecular model for ceramide channels is based on the ability of ceramide molecules to form intermolecular hydrogen bonds.
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Special care was taken to include all the hydrogen bonds between the zinc ligands and the surrounding residues.
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Bilirubin is difficult to excrete because internal hydrogen bonding makes it almost completely insoluble in water.
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The energy of the hydrogen bond is largely electrostatic in origin.
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But it is because of hydrogen bonds that ice floats, and the iceberg can sink even the unsinkable ship.
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This spectral shift possibly reflects increased hydrogen bonding and/or specific iterations with cationic species.
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The amide linkage resides in a region of low dielectric constant, according to available structural data on ceramides and cerebrosides which further promotes the formation of strong hydrogen bonds.
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Hydrogen bonding, which joins water molecule to water molecule, is responsible for other properties that make water a unique substance.
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When dealing with acids and bases, remember the uniqueness of hydrogen bonds.
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The double helix of DNA is held together by hydrogen bonds.
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The effect of hydroxylation of the long fatty acid chain may also promote the adhesion by its participation in hydrogen bonding.
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The intramolecular hydrogen bond network is not static, but consists of many fluctuating cross links within the template framework.
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The only extra hydrogen bond that is formed involving titratable residues is between OG1 and OE2.
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The hydrogen bonds and van der Waals' forces played a main role in the binding of pentachlorophenol with HA.
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The pentane molecule, however, has neither hydrogen bonding nor polar groups to be attracted to water molecules.
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The energy of this hydrogen bonding is comparable to that of the torsion-angle strain.
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Hydrogen bonds are also responsible for water's high surface tension and specific and latent heats.
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Low molecular weight aldehydes and ketones are soluble in water because the carbonyl oxygen atom allows the molecules to form strong hydrogen bonds with the molecules of water.
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We have also carried out measurements with mixtures of water and acetonitrile, a solvent that is a hydrogen bond acceptor.
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So, this phenomenon also indicated that the intermolecular hydrogen bond was important for resonance enhancement.
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The criteria for defining a conformer were based solely upon the type of intramolecular hydrogen bonds that characterized the analyzed conformations irrespective of other geometrical parameters.
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The results support the idea that the strength of hydrogen bonding reflects the magnitude of the charges on the associated proton donor and acceptor atoms.
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The active area of ENOLASE will potentially exist multi - hydrogen bond of donor and acceptor.
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The obligate dimer (A+B, C+D) is formed by domain swapping; such that strand s3B of the oligomerisation domain in monomer A forms β-sheet hydrogen bonding with strand s7D of the catalytic domain in monomer B to make a
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The microparticle could link with pulp fibre through ionic bond and hydrogen bond, from which excellent retention effect of copolymer initiated.
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One is the direct effect of hydrogen bonding by water molecules and the other is the polarizing field of neighboring polar molecular moieties.
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The replication of DNA occurs when the hydrogen bonds between the bases of each strand break, and the molecule divides into two, like a zipper being opened.
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Fig. 9 shows the average hydrogen bond lifetimes of each amino acid in the sampled peptides.
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the interactions are stabilized by hydrogen bonding
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Glutamic acid 170 forms the final main-chain hydrogen bond in the molecule.
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Additional distinct extrema in the negative regime of energy signify vicinal pairs that are hydrogen bonded.
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The device was designed and built by chemists at the Universities of Edinburgh and Bologna, and it is the hydrogen bonds that act as locking teeth on a molecular ratchet, controlling the movements of the wheels.
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The pharmacophore included a hydrogen bond receptor, a hydrogen bond donor, a hydrophobic area and a phenyl ring with a chlorine or a bromine atom.
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However, if conformers that make good hydrogen bonds to ionized sites are unavailable, the calculated ionization free energy will be wrong.
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These unusual chemical shifts for imino and amino protons are indicative of novel hydrogen bonding.
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Is a hydrogen bond shorter, or is a nitrogen-nitrogen triple bond going to be shorter?
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When combusting hydrocarbons in an engine, the energy emitted is from the breaking of the carbon and hydrogen bonds ignited in the presence of oxygen from the air.
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In heavy water the hydrogen bonds are slightly stronger, and this changes the properties of the liquid sufficiently to disrupt the lubricating effect water has on biochemical processes.
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Its molecular structure of alternating aromatic rings and amide groups crosslinked by hydrogen bonding makes it incredibly strong.
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Glutamic acid 170 forms the final main-chain hydrogen bond in the molecule.
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A hydrogen bond is a dipole dipole interaction that occurs between any molecule with a bond between a hydrogen atom and any of oxygen / fluorine / nitrogen.
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Helicases are protein motors that use the energy of NTP hydrolysis to dissociate the hydrogen bonding between the nucleic acid duplexes and also to disrupt other non-covalent interactions between complementary base pairs.
