lipid bilayer

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lipid bilayer

The two layers of phospholipid molecules included within the outer membrane of most cells. These layers are arranged so their two hydrophilic (water-soluble) sides face the interior and the exterior of the cell, and their hydrophobic (nonpolar) core is in between. The membrane is relatively impermeable to molecules such as glucose and amino acids but very permeable to lipid-soluble molecules such as oxygen, carbon dioxide, and alcohol.
See: cell for illus
See also: bilayer
References in periodicals archive ?
Among the topics are the dynamics of biopolymers and their hydration water studied by neutron scattering, the dynamic crossover phenomenon in confined water and its relation to the liquid-liquid critical point, a critical overview of agent-based models for economics, long-term memory in climate records and the detection problem, light scattering enhancement in porphyrin nanocomposites, effects of medium-chain alcohols on the structure of phospholipid bilayers, and a dynamical model for operational risk in banks.
From such studies using a variety of biophysical methods, it has been shown that alpha-tocopherol intercalates into phospholipid bilayers with the long axis of the molecule oriented parallel to the lipid hydrocarbon chains.
1) In PC, two fatty acid chains are attached to a glycerol group that is connected to choline over a phosphate group (Figure 1A); this structure enables the formation of phospholipid bilayers, which are essential for the structure of cell membranes in all life on Earth.
Among the 13 topics are the spectral assignment of membrane proteins under magic-angle spinning, determining torsion angle, sensitivity enhancement by inverse detection, magnetically aligned phospholipid bilayers, theory and experiment in chemical shift tensors of nucleic acids, and alkali metal ions in nucleic acids and related systems.