Wednesday, February 11, 2015

One end of an amphipathic phospholipid is hydrophilic (attracts onalert water), but it and the othe


One end of an amphipathic phospholipid is hydrophilic (attracts onalert water), but it and the other end having a hydrophobic but repel water. Hydrophilic end containing the negatively charged phosphate, may also contain other polar atomic group; hydrophobic end generally constituted by a long hydrocarbon chain fatty acids. After the phospholipids are placed in water, vary with the specific nature of various phospholipids to form different structures. These special properties make phospholipids play an important role in the phospholipid bilayer. as the cell membrane, often appear together in the phospholipid bilayer onalert structure of biological systems with other molecules (such as proteins, glycolipids, cholesterol). When the hydrophobic ends of the plurality of side by side alignment phospholipid molecules other hydrophobic side of the phospholipid molecules, lipid bilayer is generated, and the thin film formed in this manner, both sides have hydrophilic onalert end can be in contact with water.
Such films have a semi-permeable, do elastic exercise, flowability, and therefore attached to membrane proteins (membrane proteins or membrane surrounding body protein) and phospholipid molecules do move laterally. This movement of fluid mosaic motion models available (Fluid Mosaic onalert Model) explained this theory to the cell membrane lipid molecules described as a mosaic map, on which the various substances and proteins, the lipid molecules as solvent as well, so the protein and lipid molecules can be laterally diffusion, and moves to each point of the cell membrane. Cholesterol prevents phospholipid push stacked onalert together, thus making onalert the cell membrane onalert fluidity. However, at present this model 已遭 eliminated, because via lipid polymorphism studies, lipid nature is known under physiological (or other) conditions is not simple.
Two types of phospholipid acyl glycerol structure lysophosphatidic acid (Phosphatidic onalert acid) (phospholipids onalert salt) phospholipid acyl ethanolamine (Phosphatidylethanolamine) (cephalin) phospholipid acyl choline (Phosphatidylcholine) (lecithin) phospholipid acyl serine (Phosphatidylserine) phosphatidylinositol glycerides: inositol phosphate acyl (Phosphatidylinositol), phosphoinositide phosphate, inositol diphosphate, inositol triphosphate phosphate.
[2011] Nobel Prize in Chemistry with a golden ratio of crystal


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