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. Author manuscript; available in PMC: 2020 Aug 18.
Published in final edited form as: Anal Bioanal Chem. 2019 Aug 1;411(23):6111–6118. doi: 10.1007/s00216-019-01995-9

Fig. 6.

Fig. 6

MS/MS spectra of peptide Y177AASSYLSLTPEQWK. (a) The unmodified peptide with precursor ion m/z 581.96 (z = 3) for the negative control; AEBSF-modified peptides with precursor ion m/z 642.97 (z = 3) for (b) day-7 positive control and (c) test article (*AEBSF-modified fragment ions; y-axis is relative abundance, normalized to the highest peak in each spectrum)