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The PK_aʹs of Arginineʹs α-Carboxyl Group, α-Amino Group and Side

Question 40

Multiple Choice

The pK_aʹs of arginineʹs α-Carboxyl group, α-Amino group and side chain are 1.8, 9.0 and 12.5, respectively. Calculate the isoelectric point.

A) 7.8
B) 7.2
C) 10.8
D) 5.4

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