Biotechnology Engineering (M.Phil./Ph.D.) 2016 Panjab University Entrance Exam With Answers

Lysine is an amino acid with three ionizable groups. These are the α-COOH, α-amino and ε-amino groups with pKa values of 2.2, 9.2 and 10.8, respectively. The isoelectric point (pI) for the lysine is