lipid bilayer


Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to lipid bilayer: phospholipid, Liposomes, fluid mosaic model

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 ?
Elastic modeling of biomembranes and lipid bilayers.
Then, the protein/membrane complex with lipid bilayer system and water was built to simulate the environment of Cx50 in cell.
Phospholipids are one class of the membrane lipids, and they constitute a major component of the membrane as they can form lipid bilayers.
Importantly, electron crystallography enables us to analyze the structure of membrane proteins in a lipid bilayer, while structure analysis by ordinary X-ray crystallography is achieved in a detergent solubilized condition.
alpha]HL is secreted by Staphylococcus aureus as a monomeric water-soluble 293--amino acid protein that forms an oligomeric pore in lipid bilayers.
Liposomes enable their contents to act at the correct site (affected area) by injecting drug solutions encapsulated in a lipid bilayer into the body.
The spiral peptide called KLAKLAKKLAKLAK acts against bacteria by puncturing their lipid bilayer membranes, but has low toxicity toward mammalian cells.
There is a lipid bilayer around our body cells and overdose of Omega 6 fats compared to Omega 3 fats makes this layer stiff.
OA may enhance percutaneous penetration mainly through a dual mechanism involving stratum corneum lipid bilayer perturbation and lacunae formation as earlier studied by Jiang [26].
Their biomem-branes are not a simple lipid bilayer but contain also proteins and sugar-coat on their surface.
While simple viruses consist of only a protein shell and genetic information, more complex viruses, such as flaviviruses, also contain a lipid bilayer that sits between the protein shell and viral genome The virus core, within a lipid bilayer, has a less-ordered structure than the external, icosahedral scaffold of 90 glycoprotein E dimers.
Vibrio cholerae cytolysin/haemolysin (VCC) (1) is a prominent member of a large, heterologous family of membrane-damaging proteins, collectively called pore-forming toxins (PFTs) (2,3) that cause lysis of the target cell by punching transmembrane holes in the plasma membrane lipid bilayer.