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The pKa values for the three ionizable g...

The `pK_a` values for the three ionizable groups X, Y and Z of glutamic acid are 4.3, 9.7 and 2.2 respectively
`undersetXHO_2C -CH_2 - underset(+NH_3) underset(|)CH - CO_2 undersetZH`
The isoelectric point for the amino acid is :

A

7

B

3.25

C

4.95

D

5.95

Text Solution

Verified by Experts

The correct Answer is:
B
In acidic medium `(4.3 + 2.2)/2 = 3.25`
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