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Topic: Phospholipid bilayer


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 Reasons To Believe: Facts For Faith Issue 10, 2002
Bilayer-forming phospholipids display complex behavior aggregating into a wide range of bilayer structures (figure 6).
Evolutionary researchers point to these compounds as possibly the first cell-membrane components and as evidence that the materials necessary to form the first protocells’ boundary structures were present on the early Earth.
Some phospholipids do form structures composed of a single bilayer under laboratory conditions but only when researcher intervention and manipulation take place.
http://www.reasons.org/resources/fff/2002issue10/index.shtml   (17269 words)

  
 Liposomes --Biotechnology Encyclopedia
The lipid bilayer can fuse with other bilayers (e.g., the
vesicle with a membrane composed of a phospholipid bilayer used to deliver drugs or genetic material into a cell.
diffuse through the membrane), they can be (indiscriminately) delivered past the lipid bilayer.
http://www.biotech100.com/biotechnology_encyclopedia/liposome.htm   (71 words)

  
 Publications
Simulation studies of the interaction of antimicrobial peptides and lipid bilayers, Biochim.
Distribution of pentachlorophenol in phospholipid bilayers: A molecular dynamics study, Biophys.
Exploring models of the Influenza M2 channel - MD simulations in a phospholipid bilayer, Biophys.
http://moose.bio.ucalgary.ca/index.php?page=Publications   (1394 words)

  
 Phospholipid bilayer - definition of Phospholipid bilayer in Encyclopedia
Lipid bilayer is the foundation of all biological membranes, and is a prerequisite of cell-based life.
Other self-organizing structures that lipids assume, depending on their concentration and the type of lipid, include micelles, monolayers and vesicles.
Because of the oily core, a pure lipid bilayer is permeable to small hydrophobic solutes but has an only very low permeability barrier to inorganic ions and other hydrophilic molecules.
http://encyclopedia.laborlawtalk.com/Phospholipid_bilayer   (167 words)

  
 Lipid bilayer -- Facts, Info, and Encyclopedia article
The lipid bilayer is the foundation of all (additional info and facts about biological membrane) biological membranes, and is a prerequisite of (additional info and facts about cell-based) cell-based (The period during which something is functional (as between birth and death)) life.
Within a critical range of concentrations, certain kinds of lipids alone in a test tube of water will (additional info and facts about self-organize) self-organize to form a "bilayer".
The bilayer is composed of two opposing layers of lipid molecules arranged so that their (An organic compound containing only carbon and hydrogen) hydrocarbon tails face one another to form the oily bilayer core, while their electrically charged or polar heads face the watery or "aqueous" solutions on either side of the membrane.
http://www.absoluteastronomy.com/encyclopedia/l/li/lipid_bilayer.htm   (190 words)

  
 Cell membrane - Open Encyclopedia
Cells may vary the variety and the relative amounts of different lipids to maintain the fluidity of their membranes despite changes in temperature.
The foundation is a phospholipid bilayer, and the membrane as a whole is often described as a 'fluid mosaic' - a two-dimensional fluid of freely diffusing lipids, dotted or embedded with proteins which may function as channels or transporters across the membrane, or as receptors.
Anchoring restricts them to a particular cell face or surface--for example, the "apical" surface of epithelial cells that line the vertebrate gut--and limits how far they may diffuse within the bilayer.
http://open-encyclopedia.com/Cell_membrane   (660 words)

  
 Phosphate - EvoWiki
Phosphate groups are used to connect the hydrophobic tails of phospholipid molecules to the hydrophilic heads.
The information of our genome is encoded in the ordering of the sequence of AMP, GMP, TMP, and CMP that makes up our DNA.
Phospholipids are the main constituents of the phospholipid bilayer that makes up the plasma membrane of all cells, and segregates the organelles from the cytosol in eukaryotes.
http://www.evowiki.org/index.php/Phosphate   (332 words)

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