1. if the pkr is 4.25. Calculate the percentage of glutamate when its R group is in its basic form at pH 7.0.

2. At that same pH, what is the percentage of glutamate when its R group is in acid form?

3. Calculate the isoelectric point (pl) of glutamate

4. Determine glutamate Buffer Regions

5. Mention to which glutamate groups correspond to the pk1 pk2 and pkr values