Biochemistry

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3. Amino Acids

Isoelectric Point

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Isoelectric Point of Amino Acids

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Isoelectric Point of Amino Acids

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Problem

Draw the structure of Leu and determine its pI. pK a1 = 9.6. pKa2 = 2.4.

a. 7.59                                          

b. 6.0

c. 3.91

d. 5.5

4
Problem

At any pH below the pI, the population of amino acids in solution with non-ionizable R-groups will have: