Answer to Question #325054 in Biochemistry for Anna

Question

If pH>pl what’s the charge of

amino acid

Answer 1

When pH is greater than pI, there is an excess amount of OH- in solution. The excess of OH-

 is attracted to the positively charged amine group resulting in the removal of an H+ .The amine group has a neutral charge leaving only a negative charge on the carboxylate group. Overall, the amino acid will have a charge of −1