Figure 5.

(a) IMS–MS analyses of solubilized aggregates of (i) Aβ_16–22-BP₂₀ and (ii) Aβ_16–22·Aβ_16–22-BP₂₀, neither of which had been irradiated. The z-axis is a log intensity scale. (b) Mass spectra of isolated doubly charged dimers. These spectra show the ions under the highlighted portions of the IMS–MS plots. Assignments are depicted in cartoon form, along with m/z_calcd for [M + 2H]²⁺ and m/z_obsd.