You have discovered a novel protein that has a pI = 5.5. To study the functional properties of this new protein, your research group has made a mutant that contains two amino acid changes-namely, a surface Phe residue in the normal protein has been replaced by His (side chain pKa = 6.1), and a surface Gln has been replaced by Glu (side chain pKa = 6.0). Is the pI of the mutant protein predicted to be greater than, less than, or the same as the pI of the normal protein? Support your answer with the appropriate calculation.