what-is-the-main-difference-in-the-calculation-of-pi-for-amino-acids-with-ioniza

Question

What is the main difference in the calculation of pI for amino acids with ionizable R groups?

Accepted Answer

The presence of three pKa values.

Answer

The presence of two pKa values.

Answer

The presence of four pKa values.

Answer

The presence of one pKa value.