But the most sensitive techniques, such as diffusion tensor imaging, which measures the directional preference of water molecules in white matter, "are highly sophisticated and require technical expertise," he says.
As our main results, we observed the preference of cholesterol molecules to be located in the second coordination shell (∼1 nm), thus avoiding direct cholesterol-cholesterol contact, and that the cholesterol off-plane methyl groups induce a three-fold symmetrical arrangement of proximal cholesterol molecules.
Our preliminary data regarding KTP-NH2 interaction with membrane model systems indicates a preference of this molecule for fluid, negatively charged, membranes, which indicates different profiles of interaction for these two compounds (morphine and KTP-NH2)and supports the hypothesis of distinct molecular modes of action.
Substitution of a hydrogen atom by a fluorine atom may change the conformational preferences of the molecules due to stereoelectronic effects and also fluorine atom may be able to exert the metabolic obstruction reducing the "first-pass effect".
Computational chemistry methods and conformational preferences of small molecules from PDB and Cambridge Structural Database (CSD) can be used to predict the bound structures of the designed molecules.
Our results suggest that the intrinsic preference of different HLA molecules to present p24 peptides explains why some HLA molecules are more protective than others.
The calculations provided an additional argument that the hydrophobic self-assembling of hydrocarbons is mainly a result of the preference of the water molecules to interact among themselves via hydrogen bonding than a result of the interactions between hydrocarbon molecules.
A preference of rigid aromatic molecules for subregion 3 was also observed in other simulations (see below).
Another factor that determines surfactants activity is the surfactant packing parameter (Sp) which use a more quantitative approach, relates to the geometry of the surfactant and determines the curvature preference of a surfactant molecule (particularly when co-surfactant is used) 76, 78, 91.
These intramolecular noncovalent interactions play crucial role in modulating the conformational preferences of the molecule as well as in applications of drug design [34].
