Summary of Protein Structure Practice Problems

Identify the level of protein structure stabilized by hydrogen bonds formed between the oxygen atoms of the backbone carbonyl groups and the hydrogen atoms connected to the nitrogen atoms of the backbone.

Determine the level of protein structure made up of amino acids connected by peptide bonds.

Which interaction stabilizes the tertiary and quaternary structures of proteins by covalently linking two separate polypeptide chains or by forming a loop in the chain? Provide an example of a pair of amino acids that will form this interaction.

Are proteins denatured with pH change?