Fig. 5. (a) Induction of helicity upon metal binding in P8. (b) Ni-binding titration of P8 monitored by changes in the absorption spectrum of Phen at 280 nm. The dotted black line indicates saturation of binding at 0.5 equiv. of NiII per P8, while the small absorbance change in the shaded area is attributed to a transient tris-Phen species. (c) Sedimentation velocity data for P8 in the presence of different amounts of NiII determined by AUC.
