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Peak assignment by electrospray MS
| Peak | Formula | Observed mass, daltons | Theoretical mass, daltons |
|---|---|---|---|
| 1 | NAG-NAM(reduced)-dAla-dGlu-DAPA | 870.5 | 870 |
| (“GMP3r”) | |||
| 2 | β-GMP3 | 868.5 | 868 |
| 3 | α-GMP3 | 868.5 | 868 |
| 4 | GMP3-GMP3r | 1,721.6 | 1,720 |
| 6 | GMP3-GMP3-GMP3r | 2,571.2 | 2,570 |
| 7 | GMP3-GMP3-GMP3-GMP3r | 3,422.4 | 3,420 |
Peak numbering is as indicated in Fig. 2.
