Data set used for results shown in Figure 4B Signal intensity (double integral from EPR spectra) for proteoliposomes n-DSPC Start Superoxide Radical Hydrogen Peroxide Hydroxyl Radical mean SD %(mean) %(SD) mean SD %(mean) %(SD) mean SD %(mean) %(SD) x10^6 x10^6 x10^6 x10^6 x10^6 x10^6 x10^6 5 5.760 5.575 0.110 96.8% 1.9% 5.545 0.112 96.3% 1.9% 5.480 0.111 95.1% 1.9% 12 6.010 5.720 0.115 95.2% 1.9% 5.690 0.120 94.7% 2.0% 5.705 0.121 94.9% 2.0% 16 2.990 2.985 0.061 99.8% 2.0% 2.971 0.058 99.4% 1.9% 2.865 0.062 95.8% 2.1% Signal intensity (double integral from EPR spectra) for liposomes - low level of ROS n-DSPC Start Superoxide Radical Hydrogen Peroxide Hydroxyl Radical mean SD %(mean) %(SD) mean SD %(mean) %(SD) mean SD %(mean) %(SD) x10^7 x10^7 x10^7 x10^7 x10^7 x10^7 x10^7 5 1.250 N.A. N.A. N.A. N.A. 1.222 0.024 97.8% 1.9% 1.228 0.022 98.2% 1.8% 12 1.470 N.A. N.A. N.A. N.A. 1.432 0.030 97.4% 2.0% 1.440 0.031 98.0% 2.1% 16 1.000 N.A. N.A. N.A. N.A. 0.946 0.020 94.6% 2.0% 0.945 0.019 94.5% 1.9% Signal intensity (double integral from EPR spectra) for liposomes - high level of ROS n-DSPC Start Superoxide Radical Hydrogen Peroxide Hydroxyl Radical mean SD %(mean) % (SD) mean SD %(mean) %(SD) mean SD %(mean) %(SD) x10^7 x10^7 x10^7 x10^7 x10^7 x10^7 x10^7 5 1.250 N.A. N.A. N.A. N.A. 1.186 0.023 94.9% 1.8% 1.171 0.022 93.7% 1.8% 12 1.470 N.A. N.A. N.A. N.A. 1.375 0.031 93.5% 2.1% 1.353 0.032 92.0% 2.2% 16 1.000 N.A. N.A. N.A. N.A. 0.856 0.020 85.6% 2.0% 0.864 0.019 86.4% 1.9%