Figure 9.
Relative populations of components 1, 2, and 3 (see Figure 8) as a function of total bound Cu2+. The dipolar-coupled spectrum occurs at full copper occupancy of PrP(23–28, 57–97) and arises from copper-copper couplings between component 1 centers. The significant population of intermediate species, such as component 3, is consistent with negative cooperativity.
