3. The pentapeptide Lys-GIn-Met-Arg-Cys has N-terminal and C-terminal pK2s of 9.2 and 4.7, respectively. The side chain pKa s are Arg 12.2, Cys 8.2, and Lys 10.5. a. Write this peptide sequence using single letter abbreviations. (6 pts) b. What is the net charge of this peptide when it is fully protonated? ( 6pts) c. What is the net charge of this peptide when it is fully deprotonated? (6 pts) d. Calculate the pl of this peptide. (10 pts) e. If the N-terminus of this peptide is acetylated, what will be the pl of the acetylated peptide? (10 pts)