Table 2.
List of the distinct N-linked oligosaccharides observed in human serum using MALDI FT-ICR MS
| Mass |
Oligosaccharide Composition |
|||||||
|---|---|---|---|---|---|---|---|---|
| Expt m/z | Calc m/z | Delta | Hex | dHex | HexNAc | NeuAc | Na+ | |
| 1 | 1136.404 | 1136.397 | 0.007 | 3 | 3 | 1 | ||
| 2 | 1257.433 | 1257.423 | 0.010 | 5 | 2 | 1 | ||
| 3 | 1282.465 | 1282.455 | 0.010 | 3 | 1 | 3 | 1 | |
| 4 | 1298.462 | 1298.450 | 0.012 | 4 | 3 | 1 | ||
| 5 | 1339.488 | 1339.476 | 0.011 | 3 | 4 | 1 | ||
| 6 | 1419.490 | 1419.476 | 0.014 | 6 | 2 | 1 | ||
| 7 | 1444.521 | 1444.508 | 0.014 | 4 | 1 | 3 | 1 | |
| 8 | 1485.541 | 1485.534 | 0.007 | 3 | 1 | 4 | 1 | |
| 9 | 1501.546 | 1501.529 | 0.017 | 4 | 4 | 1 | ||
| 10 | 1542.572 | 1542.556 | 0.016 | 3 | 5 | 1 | ||
| 11 | 1647.595 | 1647.587 | 0.008 | 4 | 1 | 4 | 1 | |
| 12 | 1663.599 | 1663.582 | 0.017 | 5 | 4 | 1 | ||
| 13 | 1688.630 | 1688.614 | 0.016 | 3 | 1 | 5 | 1 | |
| 14 | 1704.629 | 1704.609 | 0.020 | 4 | 5 | 1 | ||
| 15 | 1743.605 | 1743.582 | 0.024 | 8 | 2 | 1 | ||
| 16 | 1809.655 | 1809.640 | 0.015 | 5 | 1 | 4 | 1 | |
| 17 | 1850.686 | 1850.666 | 0.020 | 4 | 1 | 5 | 1 | |
| 18 | 1866.674 | 1866.661 | 0.013 | 5 | 5 | 1 | ||
| 19* | 1976.728 | 1976.660 | −0.068 | 5 | 4 | 1 | 2 | |
| 20 | 2012.748 | 2012.719 | 0.029 | 5 | 1 | 5 | 1 | |
*
[M+2Na-H]+