Fig. 5: Relationship between Cu(I) coordination and Em. | Communications Chemistry

Fig. 5: Relationship between Cu(I) coordination and Em.

From: The structure of plastocyanin tunes the midpoint potential by restricting axial ligation of the reduced copper ion

Fig. 5

a Plot of Em and corresponding frequency of C-D symmetric stretch vibration of d3Met97 for reduced wt and mutated Pc. Error bars reflect standard deviation from triplicate measurements. b Model of changes in free energy of metal ion coordination (ΔG) due to mutations consistent with experimental data. Uox/red, Fox, and Fred refer, respectively, to the Cu site of the unfolded oxidized/reduced, folded oxidized, and folded reduced protein. ΔGent is the change in free energy associated with constraining the Cu(I) site that is disrupted by the mutations.

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