BIOL107 Lecture Notes - Lecture 3: Quaternary, Amine, Chief Operating Officer

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL107
• Professor: Martin Srayko

Document Summary

Proteins are involved in every biological task. Polymers of amino acids: there are 20 biologically relevant amino acids. They vary extensively in their structure: each one has a unique 3d shape, ex. enzymes, antibodies, storage proteins, hormones, transporters, structural cytoskeletal proteins, intracellular machines. Amino acids can exist as different enantiomers, but all proteins use l-enantiomers. Amino acids can be grouped according to the characteristics of their side chain (r group) Amino acids are linked by peptide bonds. There are 4 levels of protein structure: primary, secondary, tertiary, quarternary. The linear sequence of amino acids: nh3, nh3. + (aminio) end and a coo- (carboxyl) end. Polypeptides can be composed of a few to more than a thousand monomers. Each polypeptide can have a unique linear sequence of amino acids with an amio end (n-terminus) and a carboxyl end (c-terminus) Primary (1 ) structure is determined by inherited genetic information.