Question

C. +
08.
The C-terminal carboxyl group and the N-terminal amino group in amino acids have a dissociation constant
(pK,) of 2.2 and 9.2, respectively. The pk, of side chain carboxyl group in glutamic acid is 4.2 and side chain
amino group in lysine is 10.2. The difference in isoelectric point (PI) of lysine and glutamic acid is
b. 3.2
a. 6.5
d. 2.2
C. 7.3​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

6.5

Explanation:

pK1= 2.2

pKr1=4.2

pK2=9.2

pKr2=10.2

pI1=2.2+4.2/2=6.4/2=3.2

pI2=9.2+10.2/2=19.4/2=9.7

difference in pI=9.7-3.2=6.5

Answer= 6.5