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. Author manuscript; available in PMC: 2020 Jun 14.
Published in final edited form as: Anal Methods. 2019 May 7;11(22):2855–2861. doi: 10.1039/C9AY00585D

Figure 4.

Figure 4.

Data about proteoforms of the calmodulin. (A)-(B): sequences and fragmentation patterns of the Proteoform 1 and Proteoform 2 of calmodulin. a/x ions, b/y ions, and c/z ions were marked in green, blue, and red. (C): Distribution of the PrSMs of the Proteoform 1 and Proteoform 2 across different SEC fractions. (D): Extracted ion electropherogram of the Proteoform 1 and Proteoform 2 from the data of the SEC fraction 8. For peak extraction, m/z 1132.54 (+15) was used for the Proteoform 1 and m/z 1120.33 (+15) was used for the Proteoform 2. The mass tolerance was 20 ppm for peak extraction and Gaussian smoothing (5 points) was applied.