Figure 3.

Denatured ESI-MS spectra of intact wild-type and D76N β₂m following FPOP exposure. FPOP oxidized (orange) and non-FPOP control samples without irradiation (purple) and without irradiation or H₂O₂ exposure (black) are shown for (a) wild-type β₂m and (b) the D76N variant. Peaks are annotated with charge state. Average mass and standard deviation for the control spectra without irradiation or H₂O₂ exposure are shown. Insets highlight the 10⁺ charge state ions from each spectrum. Calculated masses and standard deviations from each species observed in the FPOP oxidized spectra are shown in the top right-hand corner.