The figure below shows amino acid interactions between the a/B2 subunit interface of hemoglobin. These interactions stabilize the T state of the protein. Based on the figure below, which amino acid in the picture below, if replaced with glutamate, would decrease the Ka of hemoglobin for O2 the most? Include both the residue and the residue number in your response (For example, V1 or K127). B, V34 8- a, R141 a, D126 a, K127 Noncovalent interactions

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