Turbidity measurements showing the incubation time for nucleation of calcium phosphate from aqueous solutions ([Ca2+] = 6.75 mM, [HPO42−] = 3.15 mM in tris buffer at 37°C with NaN3 added as a biocide). a) the addition of peptoid C792-3 at the concentrations shown. The results are compared to the turbidity data for peptoid-free solutions (Control), and solutions containing 3.7μM of 27 kDa pAsp. b) Inhibitory peptoid CC81-3, which delayed (blue and green curves, 2 and 4 μM, respectively) and completely inhibited (brown curve, 8 μM) nucleation of calcium phosphates