why-do-more-acidic-amino-acids-have-more-acidic-isoelectric-points

Question

Why do more acidic amino acids have more acidic isoelectric points?

Accepted Answer

Because they have lower pKa values, leading to a lower pI.

Answer

Because they are more soluble in water.

Answer

Because they have more ionizable groups.

Answer

Because they have higher pKa values, leading to a higher pI.