In some proteins, the side chain of serine appears to undergo ionization. explain why ionization would be facilitated by the presence of an aspartate residue nearby.

The ionization would be facilitated by the presence of an aspartic acid residue under the correct conditions the negative charge on the aspartic acid residue can function as a base and accept the hydrogen from the hydroxyl group on the serine residue.

Is this a question? i'm confused