BIOL 102 Lecture Notes - Exocytosis, Vacuole, Membrane Structure
Document Summary
Biological membranes: basic framework is phospholipid bilayer, phospholipids are amphipathic hydrophobic region faces in hydrophilic region faces out, also contain proteins & carbohydrates relative amount of each vary, amphipathic. Modifications on surfaces ie polar head group, or orientation will effect the function. Integral protein- cut from one side to another -> see the purple pieces that extend from the top to the bottom. The way it is folded has association with the bilayer. Some proteins may still fold properly, however most if they are pulled out will not work. Trans membrane domain- can calculate based on computer systems. Often have accessory compounds that help in the structural form of the cell. Proteins bound to membranes: integral membrane proteins. Can cleave or use harsh chemicals to separate: peripheral membrane proteins. Non-covalently bound to integral membrane proteins or to the polar head group of the pls.
