How do the following noncovalent interactions help to stabilize the tertiary and quaternary structure of a protein? Give an example of a pair of amino acids that could give rise to each interaction.
a. Hydrophobic interactions
A portion of a polypeptide chain contains the following sequence of amino acids: —Leu—Val—Cys—Asp—
a. Which amino acids are likely to be found on the inside of the protein structure? Why?