Determine the pl for this synthesized pentapeptide: A-B-C-D-E Given that the pK values for the amino acids in the peptide are Amino Acid A B U D E PK₁ PK2 PKR 1.94 8.8 1.74 9.87 4.98 2.46 10.2 1.95 9.47 12.71 1.57 9.49 Give your answer to 2 places after the decimal. Assume the basic pKR are amino groups and the acidic PKR are carboxyl groups.

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter26: Biomolecules: Amino Acids, Peptides, And Proteins
Section26.SE: Something Extra
Problem 35AP
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Determine the pl for this synthesized pentapeptide: A-B-C-D-E
Given that the pK values for the amino acids in the peptide are
Amino
Acid
A
B
C
D
E
PK₁ PK2 PKR
1.94 8.8
1.74 9.87 4.98
2.46 10.2
1.95 9.47 12.71
1.57 9.49
Give your answer to 2 places after the decimal.
Assume the basic pKR are amino groups and the acidic PKR are carboxyl
groups.
Transcribed Image Text:Determine the pl for this synthesized pentapeptide: A-B-C-D-E Given that the pK values for the amino acids in the peptide are Amino Acid A B C D E PK₁ PK2 PKR 1.94 8.8 1.74 9.87 4.98 2.46 10.2 1.95 9.47 12.71 1.57 9.49 Give your answer to 2 places after the decimal. Assume the basic pKR are amino groups and the acidic PKR are carboxyl groups.
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