What Is the Net Charge on the Dipeptide Arg-Pro at PH

question 42

Multiple Choice

What is the net charge on the dipeptide Arg-Pro at pH 9.0? The table below gives the pKa's of the ionizable groups on the free amino acids.

• A)-1
• B)-0.5
• C)0
• D)+0.5
• E)+1

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