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. Author manuscript; available in PMC: 2009 Aug 18.
Published in final edited form as: ACS Chem Biol. 2008 Jul 25;3(9):542–554. doi: 10.1021/cb800085g

Figure 3.

Figure 3

FT mass spectrum of the reverse AdmF reaction. Shown are the 10+ charge state of AdmA and the 9+ charge state of AdmI. The butyryl chain and (S)-β-Phe were loaded onto the reciprocal thiolation domain AdmI (peak 2) and AdmA (peak 1), respectively. The AdmF reaction led to the formation of two products, holo-AdmI (peak 3) and butyryl-(S)-β-Phe-S-AdmA (peak 4). Product formation was confirmed by observation of the butyryl-(S)-β-Phe-S-pantetheine ejection product within 2 ppm mass accuracy.