SANS for the chlorosome of Cfx. aurantiacus. (A) The SANS data for the chlorosome in 0, 25, 40, 60, 80, and 100% D2O at 20 mM Tris buffer at pH 8.0. (B) The total scattering intensity (I(0)) plot for the chlorosome in different concentrations of D2O. (C) The scattering data and Guinier analysis of the chlorosome in 100% D2O with two fits shown (inset). (D) The P(r) profile for the chlorosome in 100% D2O.