The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at pH 12.5 will be………. (Integer answer) pH 12.5 ij VsVªkisIVkbM Gly-Glu-Asp-Tyr esa _. | JEE Mains Chemistry Past Papers — Chem-Mantra | Chem-Mantra