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. Author manuscript; available in PMC: 2023 Jun 26.
Published in final edited form as: J Am Soc Mass Spectrom. 2021 Dec 7;33(1):100–110. doi: 10.1021/jasms.1c00284

Figure 4: Comparison of observed and theoretical isotopic distributions reveals more distortion of isotopic distributions in ETcaD and EThcD spectra.

Figure 4:

Dot product of the theoretical monoisotopic peak intensity and observed monoisotopic peak intensity for a) c-type and b) z•-type product isotopic distributions. Both theoretical and observed monoisotopic peak intensities are normalized to the total intensity of the first three isotopic peaks for z•-type fragments and include the [c+H]• peak for c-type fragments. Black bars are median values.