F08-BCH361-L7

F08-BCH361-L7 - Lipids and Biological Membranes Lipids...

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Lipids and Biological Membranes
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Lipids
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Triacylglycerols are lipids. They are esters of glycerole with long chain carbonic acids (named fatty acids)
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Structures of some fatty acids saturated fatty acid unsaturated fatty acid trans conformation unsaturated fatty acid cis conformation Oleate Dodecanoate
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naturally occurring saturated fatty acids
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naturally occurring unsaturated fatty acids
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saponification of a triacylglycerol Sodium salts of fatty acids are SOAP!!
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general structure of phosphoacylglycerols
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Ethanolamine Choline
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Serine Inositol
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Multiple sclerosis is cause by the destruction of the Myelin layer, that surrounds the axons of the nerve cells Spingomyellin the TV star Anette Funicello suffers from Multiple Sclerosis
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Gangliosides are complex glycolipids, often found on the surface of cell membranes
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Steroids function as hormones
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Biological Membranes
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Lipids with two acyl-chains and one polar head group form lipid-bilayers
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poly-unsaturated fatty acids are essential for the fluidity of the lipid bilayer next slide: molecular dynamics simulation of a lipid that contains one saturated and one omega 3 fatty acid
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when a membrane is heated up, it became more fluid, therefore tissues inside the body contain more saturated fatty acids
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cholesterol is also present in lipid bilayers
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F08-BCH361-L7 - Lipids and Biological Membranes Lipids...

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