FIGURE 7.

Molecular weights of nanogold-labeled particles. (a) The average molecular weight of the reconstituted particle when different numbers of nanogold labels are present. The molecular weight of each reconstituted particle was measured with PCMass28 (30). The mass that corresponds to the nanogold was excluded during statistical analysis. The error bar corresponds to the standard deviation of the calculated molecular weight at each stoichiometry. The number of particles in each group was labeled on the top of each dataset. Datasets with an asterisk have a P-value <0.01 among each other, as calculated by analysis of variance in Origin 7.5 (Microcal). (b,c) The frequency of occurrence of the molecular weight for particles with a C2 symmetry (b) or a C3 symmetry (c).