Answer
a) pI = (2.35 + 9.87) / 2 = 6.11
b) pI = (6.04 + 9.33) / 2 = 7.68
c) pI = (2.10 + 4.07) / 2 = 3.08
Work Step by Step
pI is the isoelectric point. In other words, it is the pH at which the amino acid is neutral
pI Formula: (pKa1 + pKa2) / 2
Example:
Asp is neutral between pH 1.88 and 3.65. So, pI = (1.88 + 3.65) / 2 = 2.76
