What Is the Net Charge on the Tripeptide Gly-Arg-Lys at PH

question 64

Multiple Choice

What is the net charge on the tripeptide Gly-Arg-Lys at pH 7? The table below gives the pKa's of the ionizable groups on the free amino acids.

• A)-1
• B)0
• C)+1
• D)+2

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