Histidine has 3 ionizable groups. The pKa of the alpha COOH

Histidine has 3 ionizable groups. The pKa of the alpha COOH is 1.8; the pKa on the R group is 6.0; t… Show more Histidine has 3 ionizable groups. The pKa of the alpha COOH is 1.8; the pKa on the R group is 6.0; the pka on the alpha-amino group is 9.3. At a pH of 5, what would the net charge on histidine be? +2 0 +1 -1 • Show less

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