LQB186 Lecture Notes - Lecture 1: Point Mutation, Leucine Zipper, Heme
9 Aug 2018
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Document Summary
Proteins are comprised of long chains of recurring monomers called amino acids. Amino acids all share a common basic structure, with a central carbon atom bound to: Amino acids are joined together on the ribosome to form long chains called polypeptides making up proteins. Each type of amino acid differs in the composition of the variable side chain. These side chains will have distinct chemical properties (charged, non-polar) Causing the protein to fold and function differently according to its specific position within the polypeptide chain. Electically charged: functional groups are charged (ionized) at cellular ph: negatively charged = acidic, positively charged = basic. Peptide bonds are formed in a condensation reaction. Amino acids can be covalently joined together in a condensation reaction forming a dipeptide and water. The covalent bond between the amino acids is called a peptide bond. Long chains of covalently bonded amino acids are called polypeptides.
