Figure 5.

Observed versus calculated isotope distribution (a) for [Aβ + H + Co(NH₃)₆]⁴⁺ and (b) for the [Aβ + 2H + Co]⁴⁺ ion observed upon collisional activation of the complex; the bottom two panels show top-down fragmentation of native [Aβ + H + Co(NH₃)₆]⁴⁺, using CID at (c) 30 V, and (d) 25 V. An overview of all fragments identified in (c) and (d) can be found in Supporting Information S6