CAS BI 105 Lecture Notes - Lecture 9: Lipophilicity, Osmosis, Solution
27 Sep 2016
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Document Summary
Hydrophobic regions are stuck in the middle. Hydrophillic regions of protein and membrane are on the outside. Membrane is fluid- the rafts will lazily go around the top (they wont flip down) Phospholipids will move around in the membrane. Proteins are 2nd most common molecule in the membrane and impart most of the function. So important 25% of all genes encode for transmembrane proteins. Transmembrane, span the membrane- stick out and span the width. Carbohydrate chains- tag cells or cell-cell recognition (allows for cells to identify others) Proteins are the 2nd most common type of molecule in the membrane. Different flotation devices snapshot every hour- the orientation is never the same. Enzymatic proteins- accelerate chemical regulations on cell surface. Receptor proteins- bind to chemical signals from the extracellular environment. Recognition proteins (name with cd) these tag different types of cells and aid in. Transport proteins- help molecules move through membrane (most common) Fluid-mosaic model- always moving into different orientations communication.
