If you were to have a mythical AA based on Glutamic acid in which the carboxylate on the side chain is replaced by an amine

Question

If you were to have a mythical AA based on Glutamic acid in which the carboxylate on the side chain is replaced by an amine group with pKa of 11.0. What would be the predominant form of this AA at pH 4, 7 and 12? Draw these structures

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