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. Author manuscript; available in PMC: 2022 Sep 16.
Published in final edited form as: Biochemistry. 2021 Oct 22;60(44):3292–3301. doi: 10.1021/acs.biochem.1c00555

Figure 5.

Figure 5.

Bottom-up mass spectrometry characterization of Kir2.1S425A for localization of phosphorylation at S13, S14, and Y326. Representative MS/MS spectra annotated using Skyline software.67 Purple, blue, and gray peaks denote b, y, and unassigned ions, respectively. Brackets indicate the identified mass shifts in Da for the residues.