Question

1
Estimate the net charge of a peptide Ser-Glu-Pro-Ile-Met-Ala-Pro-Val-Glu-Tyr-Pro-Lys at pH 7.0 and at pH 12.0.
Typical ranges observed for pk, values of groups in protein: a-carboxyl group (3.5-4.0), side chain carboxyl
group (4.0-4.8), a-amino group (8.0-9.0), phenolic group (9.5-10.5), side chain amino group (9.8-10.4).
a. -1, -4
b. -4,-1
C. -4,-4
d. -1, -1
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Answer 1

Answer:

b___ -1-1 but answer is months ago for a physical activity