At this PH value. When the PH is equal to the PKA of this group of 10.8, then half of them will exist in this form. The other half will exist in this form. If we go below a PH of 10.8, this group will predominate. If we go above a PH of 10.8, this is the group that will predominate. And the same thing is true for the other five readily ionizable amino acids.