Lipid bi-layer: Difference between revisions
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The lipid bi-layer provides a basic impermeable barrier around cells, and is approximately 5nm thick. They help to maintain different environments between cytosol and the extracellular environment/organelles, and also control the transport of solutes between compartmentsThe lipid bilayer consists of four major [[Phospholipid|phospholipids ]] | The lipid bi-layer provides a basic impermeable barrier around cells, and is approximately 5nm thick. They help to maintain different environments between cytosol and the extracellular environment/organelles, and also control the transport of solutes between compartmentsThe lipid bilayer consists of four major [[Phospholipid|phospholipids which]] are; phopshatidylethanolamine, [[Phosphatidylserine|phosphatidylserine]], phosphatidycholine and sphingomyelin. These are derived from glycerol apart from sphingomyelin, which is derived form [[Phosphatidylserine|serine]]. Phosphatidylserine is the only one negatively charged.<ref name="null">Molecular Biology of the Cell, Alberts <i>et al.</i>, 5th Edition (2007) Garland Science, New York Chapter 10 p617-65</ref> | ||
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Revision as of 15:52, 12 November 2010
The lipid bi-layer provides a basic impermeable barrier around cells, and is approximately 5nm thick. They help to maintain different environments between cytosol and the extracellular environment/organelles, and also control the transport of solutes between compartmentsThe lipid bilayer consists of four major phospholipids which are; phopshatidylethanolamine, phosphatidylserine, phosphatidycholine and sphingomyelin. These are derived from glycerol apart from sphingomyelin, which is derived form serine. Phosphatidylserine is the only one negatively charged.[1]
References
- ↑ Molecular Biology of the Cell, Alberts <i>et al.</i>, 5th Edition (2007) Garland Science, New York Chapter 10 p617-65