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. 2014 May;101(100):5–15. doi: 10.1016/j.phytochem.2014.02.010

Fig. 4.

Fig. 4

(A) nanoESI-QTOF mass spectra of jrPPO1(Asp101 → Pro444). Inset(A): Peaks of charge state [33] to [38] magnified. (B) Zoomed section of charge state [36] and [37]. Masses of species A–C: A = 38,692 Da, B = 38,793 Da; C = 38,890 Da; Mass differences between species fit to distinct amino acid composition indicated in amino acid letter code. Inset(B): Highly zoomed figure of charge state [36] showing clearly shoulders corresponding to mass differences of 16 or 32 Da (oxidation).