Under certain conditions, the side chains (R-groups) of aspartic acid and lysine can form an ionic bond with one another. The pK for the ionizing groups on these side chains is 3.86 for aspartic acid and 10.53 for lysine.

A) Draw the dominant structure of each of these amino acid side chains at pH 3. Indicate whether an ionic bond can form between these amino acid side chains at pH 3.

B) Draw the dominant structure of each of these amino acid side chains at pH 8. Indicate whether an ionic bond can form between these amino acid side chains at pH 8.