Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Lipid_bilayer> ?p ?o }
- Lipid_bilayer abstract "The lipid bilayer is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells. The cell membranes of almost all living organisms and many viruses are made of a lipid bilayer, as are the membranes surrounding the cell nucleus and other sub-cellular structures. The lipid bilayer is the barrier that keeps ions, proteins and other molecules where they are needed and prevents them from diffusing into areas where they should not be. Lipid bilayers are ideally suited to this role because, even though they are only a few nanometers in width, they are impermeable to most water-soluble (hydrophilic) molecules. Bilayers are particularly impermeable to ions, which allows cells to regulate salt concentrations and pH by transporting ions across their membranes using proteins called ion pumps.Biological bilayers are usually composed of amphiphilic phospholipids that have a hydrophilic phosphate head and a hydrophobic tail consisting of two fatty acid chains. Phospholipids with certain head groups can alter the surface chemistry of a bilayer and can, for example, serve as signals as well as "anchors" for other molecules in the membranes of cells. Just like the heads, the tails of lipids can also affect membrane properties, for instance by determining the phase of the bilayer. The bilayer can adopt a solid gel phase state at lower temperatures but undergo phase transition to a fluid state at higher temperatures, and the chemical properties of the lipids' tails influence at which temperature this happens. The packing of lipids within the bilayer also affects its mechanical properties, including its resistance to stretching and bending. Many of these properties have been studied with the use of artificial "model" bilayers produced in a lab. Vesicles made by model bilayers have also been used clinically to deliver drugs.Biological membranes typically include several types of molecules other than phospholipids. A particularly important example in animal cells is cholesterol, which helps strengthen the bilayer and decrease its permeability. Cholesterol also helps regulate the activity of certain integral membrane proteins. Integral membrane proteins function when incorporated into a lipid bilayer, and they are held tightly to lipid bilayer with the help of an annular lipid shell. Because bilayers define the boundaries of the cell and its compartments, these membrane proteins are involved in many intra- and inter-cellular signaling processes. Certain kinds of membrane proteins are involved in the process of fusing two bilayers together. This fusion allows the joining of two distinct structures as in the fertilization of an egg by sperm or the entry of a virus into a cell. Because lipid bilayers are quite fragile and invisible in a traditional microscope, they are a challenge to study. Experiments on bilayers often require advanced techniques like electron microscopy and atomic force microscopy.".
- Lipid_bilayer thumbnail Lipid_bilayer_section.gif?width=300.
- Lipid_bilayer wikiPageExternalLink avantilipids.com.
- Lipid_bilayer wikiPageExternalLink inicio.htm.
- Lipid_bilayer wikiPageExternalLink Bilayer_Struc.html.
- Lipid_bilayer wikiPageExternalLink index2.html.
- Lipid_bilayer wikiPageExternalLink search.htm.
- Lipid_bilayer wikiPageID "158011".
- Lipid_bilayer wikiPageLength "76168".
- Lipid_bilayer wikiPageOutDegree "245".
- Lipid_bilayer wikiPageRevisionID "683522643".
- Lipid_bilayer wikiPageWikiLink Ab_initio.
- Lipid_bilayer wikiPageWikiLink Action_potential.
- Lipid_bilayer wikiPageWikiLink Adenosine_triphosphate.
- Lipid_bilayer wikiPageWikiLink Alec_Bangham.
- Lipid_bilayer wikiPageWikiLink Alec_Douglas_Bangham.
- Lipid_bilayer wikiPageWikiLink Alkane.
- Lipid_bilayer wikiPageWikiLink Amphiphile.
- Lipid_bilayer wikiPageWikiLink Angiogenesis.
- Lipid_bilayer wikiPageWikiLink Anion.
- Lipid_bilayer wikiPageWikiLink Annular_lipid_shell.
- Lipid_bilayer wikiPageWikiLink Antibodies.
- Lipid_bilayer wikiPageWikiLink Antibody.
- Lipid_bilayer wikiPageWikiLink Apoptosis.
- Lipid_bilayer wikiPageWikiLink Aqueous_solution.
- Lipid_bilayer wikiPageWikiLink Archaea.
- Lipid_bilayer wikiPageWikiLink Atomic_force_microscopy.
- Lipid_bilayer wikiPageWikiLink B-cell.
- Lipid_bilayer wikiPageWikiLink B_cell.
- Lipid_bilayer wikiPageWikiLink Bacteria.
- Lipid_bilayer wikiPageWikiLink Bacterial_outer_membrane_vesicles.
- Lipid_bilayer wikiPageWikiLink Bacterium.
- Lipid_bilayer wikiPageWikiLink Biological_membrane.
- Lipid_bilayer wikiPageWikiLink Biosensor.
- Lipid_bilayer wikiPageWikiLink Biosynthesis.
- Lipid_bilayer wikiPageWikiLink Birefringence.
- Lipid_bilayer wikiPageWikiLink Blood_serum.
- Lipid_bilayer wikiPageWikiLink Blood–brain_barrier.
- Lipid_bilayer wikiPageWikiLink CD59.
- Lipid_bilayer wikiPageWikiLink Caco-2.
- Lipid_bilayer wikiPageWikiLink Capacitance.
- Lipid_bilayer wikiPageWikiLink Carbohydrate.
- Lipid_bilayer wikiPageWikiLink Category:Biological_matter.
- Lipid_bilayer wikiPageWikiLink Category:Membrane_biology.
- Lipid_bilayer wikiPageWikiLink Category:Surfactants.
- Lipid_bilayer wikiPageWikiLink Cation.
- Lipid_bilayer wikiPageWikiLink Cell_(biology).
- Lipid_bilayer wikiPageWikiLink Cell_membrane.
- Lipid_bilayer wikiPageWikiLink Cell_nucleus.
- Lipid_bilayer wikiPageWikiLink Cell_wall.
- Lipid_bilayer wikiPageWikiLink Chemical_polarity.
- Lipid_bilayer wikiPageWikiLink Chemical_potential.
- Lipid_bilayer wikiPageWikiLink Chloroform.
- Lipid_bilayer wikiPageWikiLink Cholesterol.
- Lipid_bilayer wikiPageWikiLink DNA.
- Lipid_bilayer wikiPageWikiLink DNA_sequencing.
- Lipid_bilayer wikiPageWikiLink Degree_of_unsaturation.
- Lipid_bilayer wikiPageWikiLink Dielectric_breakdown.
- Lipid_bilayer wikiPageWikiLink Diffusion.
- Lipid_bilayer wikiPageWikiLink Digestion.
- Lipid_bilayer wikiPageWikiLink Dipole.
- Lipid_bilayer wikiPageWikiLink Double_bond.
- Lipid_bilayer wikiPageWikiLink Dual-polarization_interferometry.
- Lipid_bilayer wikiPageWikiLink Dual_polarisation_interferometry.
- Lipid_bilayer wikiPageWikiLink Egg.
- Lipid_bilayer wikiPageWikiLink Egg_(biology).
- Lipid_bilayer wikiPageWikiLink Electrical_breakdown.
- Lipid_bilayer wikiPageWikiLink Electrical_resistance.
- Lipid_bilayer wikiPageWikiLink Electrical_resistance_and_conductance.
- Lipid_bilayer wikiPageWikiLink Electron.
- Lipid_bilayer wikiPageWikiLink Electron_microscope.
- Lipid_bilayer wikiPageWikiLink Electron_microscopy.
- Lipid_bilayer wikiPageWikiLink Electrophysiology.
- Lipid_bilayer wikiPageWikiLink Electroporation.
- Lipid_bilayer wikiPageWikiLink Endoplasmic_reticulum.
- Lipid_bilayer wikiPageWikiLink Epiphyseal_plate.
- Lipid_bilayer wikiPageWikiLink Erythrocyte.
- Lipid_bilayer wikiPageWikiLink Ether.
- Lipid_bilayer wikiPageWikiLink Eukaryote.
- Lipid_bilayer wikiPageWikiLink Eukaryotic.
- Lipid_bilayer wikiPageWikiLink Exocytosis.
- Lipid_bilayer wikiPageWikiLink Fertilisation.
- Lipid_bilayer wikiPageWikiLink Fertilization.
- Lipid_bilayer wikiPageWikiLink Flippase.
- Lipid_bilayer wikiPageWikiLink Fluid.
- Lipid_bilayer wikiPageWikiLink Fluids.
- Lipid_bilayer wikiPageWikiLink Fluorescence_microscope.
- Lipid_bilayer wikiPageWikiLink Fluorescence_microscopy.
- Lipid_bilayer wikiPageWikiLink G_protein-coupled_receptor.
- Lipid_bilayer wikiPageWikiLink G_protein–coupled_receptor.
- Lipid_bilayer wikiPageWikiLink Gastrointestinal_tract.
- Lipid_bilayer wikiPageWikiLink Gel.
- Lipid_bilayer wikiPageWikiLink Gram-negative.
- Lipid_bilayer wikiPageWikiLink Gram-negative_bacteria.
- Lipid_bilayer wikiPageWikiLink Growth_plate.
- Lipid_bilayer wikiPageWikiLink HIV.
- Lipid_bilayer wikiPageWikiLink Hepatocyte.
- Lipid_bilayer wikiPageWikiLink History_of_cell_membrane_theory.
- Lipid_bilayer wikiPageWikiLink Horizontal_gene_transfer.
- Lipid_bilayer wikiPageWikiLink Hybridoma.