Figure 3.
Relative abundances of c1+ ions from cleavage sites 1-17 of Ubiquitin 7+ ions after a (a) 0.2 and (b) 5 s delay prior to ECD; (c) causing CA with a 105V potential at the head of the second hexapole after a 0.2 s and (d) 5 s delay prior to ECD [10].