BIOS 1700 Lecture Notes - Lecture 7: Carboxylic Acid, Amine, Cysteine
13 Sep 2016
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Document Summary
Amino acids: includes an amino group and a carboxyl group which are essential for chain formations, the r-group is the factor that changes which amino acid is which, there are 5 groups of amino acids. This creates more space that allows the amino acid to move and have free rotation. Indirect double bound which creates a kink: cysteine. Amino acids are read from n (amino) terminus to c (carboxyl) terminus. Found in all protein: secondary structure. Form with a given protein by hydrogen bonds between amino and carboxyl groups: alpha ( ) helix. Connected via hydrogen bonds: beta ( ) sheet. Found in all proteins: tertiary structure. The 3d shape of the polypeptide formed from interactions between r groups. Factors to consider: spatial distribution of hydrophobic or hydrophilic amino acids. Why: a cell is an aqueous environment. This means the hydrophobic parts of the proteins will come together to get away from the water: chemical bonds.
