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9 Cards in this Set
- Front
- Back
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What are 4 functions of mammalian plasma membrane? |
Separation of environments, provide supportive environment for membrane-bound proteins, import and export molecules across membrane, cell movement |
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What drives spontaneous membrane formation? |
Hydrophobic interactions of phospholipid tails as they avoid interaction with water |
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What side are phosphorus formed on? |
Cytosolic side |
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Difference between Micelle and bilayer? |
Micelle groups of single tailed. Bilayer group of two tailed phospholipids |
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Name the 4 phospholipids that make up ~50% of most mammalian lipid membranes? |
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Flippase |
Moves selected lipids in one direction into cytosol |
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Floppase |
Moves selected lipids in one direction out of cytosol towards lumen/extracellular space |
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Scramblase |
Moves lipids in both direction into and out of cytosol. One at a time. |
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Describe how phosphatidylserine functions as signal in membrane. |
When this lipid, typically found in the cytosol, is moved to extracellular space, if it is left there it means the mitochondria is not functioning properly and not enough atp to move it back so it signals for apoptosis. |
