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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2019 Aug 5;30(10):2037–2040. doi: 10.1007/s13361-019-02272-w

Figure 2.

Figure 2.

Scatter plot of the fraction of the peak area of the fragment m/z 271 as a function of transfer collision energy (a). Tandem mass spectra of deprotonated E17G (pink, top) and E3G (blue, bottom) at collision energy 40 V (b).