69 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

Question

69 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 Free amino acid Glycine Arginine Lysine A 1 pka of a Carboxyl group 2 4 1 8 2 2 B 1 pka of a amino group 9 8 9 0 9 1 C O pKa of side chain 12 5 10 5 D 2 69

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