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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