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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2014 Jul 20;25(10):1730–1738. doi: 10.1007/s13361-014-0956-2

Figure 2.

Figure 2

ECD product-ion mass spectra of the [M+2H]2+ precursors of (A) nonphosphorylated p1518 and (B) phosphorylated Pp1598 produced with the EMS cell retrofitted into the Agilent G6460 QqQ mass spectrometer. (C) ECD product-ion mass spectrum of the [M+2H]2+ precursor of phosphorylated Pp1598 produced with the Bruker 15T SolariX FT mass spectrometer. (D) CID product-ion spectrum of the [M+2H]2+ precursor of phosphorylated Pp1598 produced with the shortened CID cell retrofitted into the Agilent G6460 QqQ.