What is the optimum pH to separate a mixture of lysine, arginine, and cysteine using electrophoresis? Draw the structures of the three amino acids in the protonation state that would predominate at the pH you have chosen . (See Figure 5.3 and Table 5.1.) For each amino acid, indicate the net charge at the chosen pH as well as the direction of migration and relative mobility in the electric field.

Apply the sample mixture here