BIO E105 Lecture Notes - Lecture 2: Lipid Bilayer, Amine, Thiol
Document Summary
All life on the planet uses the same molecular building blocks. (same 20 amino acids) The structure of these building blocks is dependent on the fundamental principles of chemistry (polarity, bonding) The function of a biological molecule is determined by its structure and its interaction with the surrounding environment (usually an aqueous environment in an organism). (phospholipid bilayer) The structure of many biological molecules allows chemical reactions to go forward by promoting those reactions, making them easier to proceed by lowering the energy costs involved. The structure of a protein can be analyzed at four levels: amino acid sequence sheets, substructures called, interactions between amino acids that dictate a protein"s overall shape, combinations of individual proteins that make up larger, multiunit molecules and. All proteins are made from just 20 amino acid building blocks: all amino acids have a central carbon atom that bonds to nh2, cooh, h, and a variable side chain ( r-group ).
