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29 Cards in this Set
- Front
- Back
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Fatty Acids |
Long chains of H-C |
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18 carbon FA |
-Oleic acid -Linoleic acid |
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16 carbon FA |
Palmitoleic acid |
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Function of triacylglycerol |
store FA that can be broken down to release metabolic Energy |
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Composition of Glycerophospholipid |
-Glycerol backbone -2 FA -Phosphate head group *hydrophobic tail with polar charged head |
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Glycerophospholipid are a Main component in |
lipid bilayers |
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three common head groups in Glycerophospholipid |
Phsphatydy... -Choline -ethanolAmine -serine *help attach fat to proteins |
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phospholipase |
cleaves phospholipids at specific sites |
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Sphingolipids have sphingosine backbone |
Derivatives of Palmitate and Serine -amphiphatic -Doesnt have glycerol backbone |
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Sphingomyelin |
-Found in myelin sheath around nerves - contains sphingosine, acyl group, and phosphocholine |
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Cerebrosides |
Sphingolipid containing monosacch as a head group. -Found in cell membrane in brain -glycoproteins attached |
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Gangliosides |
sphingolipids that have oligosaccharides |
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Isoprenoids |
lipid derivatives of Isoprene CH3 | H2C=CH-C=CH2 -Building blocks of cholesterol |
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Ubiquinone
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-Carries H+ and e- -crucial for cell metabolism -carries charge through Red-Oxy Rxn |
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Cholesterol is a ________derivative
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isoprenoid |
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Cholesterol is metobolic precursor |
of steroid hormones and bile salts |
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Vit D |
-isoprenoid derivative from cholesterol - |
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Vit A |
-isoprenoid derivative -Helps see in the dark |
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Vit E |
-isoprenoid derivative -in cell membranes, suppress radical formation |
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Vit K. |
-isoprenoid derivative -Involved in blood coagulation |
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Cause of Asymmetric lipid bilayer |
Random assembly of uneven amount of components of different lipids. |
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Transverse diffusion |
-Nonspotaneous -veryslow |
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Lateral Diffusion |
- Spontaneous -Fastes |
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Function of cholesterol in membrane |
maintains membrane fluidity. Stabilizes membrane. Decreases movement. |
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Integral proteins |
Middle is non polar. ends are polar. Fully buried |
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Peripheral membrane proteins |
-Mainly polar -Easiest to remove from membrane |
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Lipid linked protein
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-covalently bonded to inside of the membrane |
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Alpha helices membrane protein |
-side chains are hydrophobic ILE,LEU, VAL, PHE -head groups TRP, TRY, ASN, GLN -Exposed to solvent ASP,GLU, LYS, ARG |
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Beta Barrel membrane protein |
TO favor crossing, Hbonds increased, Beta sheets close up |
