Fig. 1.

(A–C) Concentration-normalized scattering intensities for R10 (solid lines) and K10 (dashed lines) at various peptide concentrations, $c_p$, in 0.020 M Tris buffer solutions of 0.060 M (A), 0.150 M (B), and 0.300 M (C) ionic strength, $c_s$. (D) Extrapolated $I(0)/c_p$ values for samples of R10, K10, R8KR, and K8RK of increasing $c_p$ at $c_s=0.150$ M. Lines connecting points in D are guides to the eye.