Shown above are images of two amino acids, along with the pKas of each of their titrateable groups.

Question

(a) Calculate the isoelectric point (pI) of the dipeptide Glycine-Arginine.

unanswered
(b) Calculate the isoelectric point (pI) of the dipeptide Arginine-Glycine.

Answer 1

a) 11.13
b) 10.76

Answer 2

can you tell the formula chemgam please.

Answer 3

Had the answer from someone else and still awaiting the formula to double check.

Answer 4

If you check week 12: Amino Acids and Protein Synthesis, S32E5: SYNTHESIS OF PEPTIDES, you can work your way through this problem...