Table 1.
ESI-MS data and deduced compositions of the PcAGP1 GPI-anchor oligosaccharides and their derivatives
| Oligosaccharide | Molecular ion [M + H]+
|
Deduced composition | ||
|---|---|---|---|---|
| Native | AQC derivative | Per-O-methylated AQC derivative | ||
| 1 | 990.5 | 1,160.2 | 1,468.3 | Hex4HexN-inositol |
| 2 | 828.4 | 998.2 | 1,264.3 | Hex3HexN-inositol |
| 1a | ND | 1,242.2 | — | FP-Hex4HexN-inositol |
| 2a | — | 1,080.3 | — | FP-Hex3HexN-inositol |
| 1b | 1,113.6 | — | — | EtNOP-Hex4HexN-inositol |
| 2b | 951.7 | — | — | EtNOP-Hex3HexN-inositol |
ND, not determined; FP, fluorophosphate; EtNOP, ethanolamine phosphate.