Draw the predominant form for glutamate in a solution with the following pH:
a. 0

Identify the location and type of charge on the hexapeptide Lys-Ser-Asp-Cys-His-Tyr at each of the following pH values:

c. pH=7

Draw the form of aspartate that predominates at the following pH values:

d. pH=11.0

Draw the form of aspartate that predominates at the following pH values: c. pH=6.0

Draw the predominant form for glutamate in a solution with the following

pH: b. 3

c. Which amino acid has the greatest amount of negative charge at pH = 6.20?

Draw the pH–activity profile for an enzyme that has one catalytic group at the active site:

a. the catalytic group is a general-acid catalyst with a pK_a = 5.6.

Draw the pH–activity profile for an enzyme that has one catalytic group at the active site:

b. the catalytic group is a general-base catalyst with a pKa = 7.2.

The pH–activity profile for glucose-6-phosphate isomerase indicates the participation of a group with a pK_a = 6.7 as a basic catalyst and a group with a pK_a = 9.3 as an acid catalyst. Draw the pH–activity profile and identify the amino acids that participate in the catalysis.