Skip to main content
. Author manuscript; available in PMC: 2008 Sep 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2007 Jun 13;18(9):1569–1578. doi: 10.1016/j.jasms.2007.05.020

Figure 6.

Figure 6

Product-ion spectra of the ESI-produced [M + 2H]2+ ion of the tryptic peptide GRPKGSK64NK66GAAK70TR from HMGA1a that was acetylated in vitro by PCAF (A) and p300 (B). The four insets are the expanded mass spectra of y6 (left) and y7 (right) ions, in which the acetylation was induced by PCAF (top) and p300 (bottom). A scheme summarizing the observed fragment ions of this peptide is shown above the mass spectra.