Table 1.
, Positive ion cross section measurements for high-mannose N-glycans
| Hexose | Structure |
m/z
[M+Na]+ |
Cross section data (Å2) | |||||
|---|---|---|---|---|---|---|---|---|
| TW IM-MS | Published lineara | |||||||
| Nitrogen | Helium | Nitrogen | Helium | |||||
| Cross section |
SD | n | Calculated cross section |
Cross section (Å2) |
Cross section (Å2) |
|||
| 3 | 19 | 933.3 | 303.5 | 1.19 | 3 | 219.3 | 294.2 | 209.7 |
| 5 | 17 | 1257.4 | 353.9 | 2.30 | 11 | 265.8 | 354.2 | 261.8 |
| 6 | 14 | 1419.5 | 376.3 | 2.05 | 11 | 286.2 | 376.1 | 278.2 |
| 7 | Mainly 11 | 1581.5 | 396.4 | 1.89 | 10 | 304.6 | 396.8 | 300.4 |
| 8 | 7 | 1743.6 | 426.4 | 2.41 | 9 | 332.6 | 426.6 | 327.2 |
| 9 | 4 | 1905.6 | 449.2 | 2.33 | 9 | 353.7 | 456.2 | 346.9 |
a
) Mean value from the glycans in ovalbumin, ribonuclease B and desialylated thyroglobulin.