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. 2010 Apr 12;285(23):17662–17672. doi: 10.1074/jbc.M109.065433

FIGURE 4.

FIGURE 4.

Sequence assignment based on the ESI-CID-MS/MS fragmentation of bus-2 [M+Na]+m/z 1130.553. All fragments contain sodium. The Z product ion (circled) was isolated for ESI-CID-MS3 sequence analysis of bus-2 [M+Na]+ m/z 1130.553 → 690.328 as illustrated in the inset. Unlabeled peaks within the inset were observed in control spectra and correspond to electronic noise.