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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: Anal Biochem. 2008 Sep 14;386(1):1–8. doi: 10.1016/j.ab.2008.09.007

Fig. 4.

Fig. 4

ESI-MS mass spectra of (A) mCherry-CVIA and (B) mCherry-CVIA-1, labeled with deconvoluted masses for each of the three peak series. In addition to an ion series corresponding to parent protein [M+H], the spectra also show ion series [M+H+98] and [M+H+2(98)]. This pattern has been previously observed and ascribed to associated H2PO4- ions [45–47].