Biochemistry 2280A Lecture Notes - Lecture 7: Low-Density Lipoprotein, Lipoprotein, Glycerol

34 views2 pages

Document Summary

Types of lipids - biological molecules that are sparingly soluble in water but are soluble in organic solvents. Fatty acids - used for energy and structure. In biological systems, unsaturated fatty acids tend to be cis. Ldl = low-density lipoprotein, carries cholesterol to tissues. Hdl = high-density lipoprotein, carries cholesterol from tissues. Replace one of the glycerols with a phosphate group. It is energetically unfavorable to have a planar phospholipid bilayer with its edges exposed to water. The planar layer folds into itself to form a sealed compartment such that there is no edge to expose to water - nrgetically favorable. The lipids are not stationary within the membrane, they can move around = lateral diffusion, flexion, rotation, flip-flop (rarely happens - you"d have to move the hydrophilic head through the hydrophobic middle region) Longer chains attract each other with van der wals forces so decreased fluidity. Cholesterol has different effects at different temperatures.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions