BIOL 1F90 Lecture Notes - Lecture 8: Van Der Waals Force, Alpha Helix, Chemical Polarity
Document Summary
Many cellular processes involve steps in which two or more different proteins interact with each other. Hydrophobic effects - if you have 2 alpha helices that have greasy sides, they. Ionic bonds and other polar interactions made interact, therefore you"d have all the hydrophobic ends on one side, and all the hydrophilic ends on one side. Defined regions of proteins with structural and functional differences. Fold independently of the rest of the protein. These particular amino acid sequences have been duplicated during evolution. The same domain may be found in several different proteins. When the same domain is found in different proteins, it has the same 3-d shape, chemical properties and function. Used purified (isolated) ribonuclease, and found that: Chemicals that disrupt bonds cause the enzyme to lose function. Thus, in the complete absence of any cellular factors, an unfolded protein can refold into it functional structure.