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Isoelectric Point
29. Amino Acids / Isoelectric Point / Problem 6
Problem 6

Draw the structure of the prominent form of lysine (pI 9.7) present at pH values of 6, 9.7, and 12. (pK1 α-carboxyl group = 2.18, pK2 α-amino group = 8.95, pK3 side chain amino group = 10.53)