Biology 2382B Lecture Notes - Lecture 24: Ion Transporter, Antiporter, Flippase
24 Apr 2016
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Document Summary
Membrane defines a cell, lots cross the membrane, proteins within the membrane. Phospholipid bilayer is the structure of most membranes. Different fatty acids, you want to give the membrane certain properties such as fluidity (fluid yet structural) Different melting temperatures in different fatty acids (above = oil, below = fat) you want the in between for structure. Long chain hydrocarbons with a head, carbons can be saturated (no d- bonds), lower melting temperatures is adding double bonds (kinks) Extending the length of the chain = more traction, more solid, higher melting temperature. Melting point increases with increasing chain length and melting point decreases with increasing unsaturation** Fluidity: function at a specific temperature, fatty acids need to be selected specifically for function/fluidity. Lateral protein movement in a plasma membrane which is a reflection of lipid movement in a plasma membrane. Proteins from the side laterally diffuse into the bleached area.
