The reductive amination of the structure shown below would give which amino acid product?

1.aspartic acid
2.glutamic acid
3.cysteine
4.alanine
5.none of these
Question 2One can always calculate the pI of an amino acid by
1.averaging the pKa of the -carboxyl group and the -amino group
2.averaging two pKa values, but which ones are averaged will depend on which amino acid it is
3.averaging the pKa of the -carboxyl and the side chain
4.averaging the pKa of the -amino and the side chain
5.averaging the pKa values of the -amino, -carboxyl, and side chain