Composition of negatively charged molecular ions [M-H]− observed in MALDI-TOF spectra of O-glycan alditols and N-glycans obtained from L-B-CD34
| Signal observed, m/z . | Signal calculated, m/z . | Composition . |
|---|---|---|
| O-glycan alditols | ||
| 675.0 | 675.3 | NeuAc1Hex1HexNAc1 |
| 829.1 | 829.2 | SO3Hex2HexNAc2 |
| 966.2 | 966.3 | NeuAc2Hex1HexNAc1 |
| 975.2 | 975.3 | SO3Fuc1Hex2HexNAc2 |
| 1040.3 | 1040.4 | NeuAc1Hex2HexNAc2 |
| 1120.2 | 1120.3 | SO3NeuAc1Hex2HexNAc2 |
| 1186.4 | 1186.4 | Fuc1NeuAc1Hex2HexNAc2 |
| 1266.3 | 1266.4 | SO3Fuc1NeuAc1Hex2HexNAc2 |
| 1331.4 | 1331.5 | NeuAc2Hex2HexNAc2 |
| 1411.3 | 1411.4 | SO3NeuAc2Hex2HexNAc2 |
| 1485.3 | 1485.5 | SO3NeuAc1Hex3HexNAc3 |
| 1557.3 | 1557.5 | SO3Fuc1NeuAc2Hex2HexNAc2 |
| 1631.3 | 1631.5 | SO3Fuc1NeuAc1Hex3HexNAc3 |
| 1696.3 | 1696.6 | NeuAc2Hex3HexNAc3 |
| 1776.2 | 1776.6 | SO3NeuAc2Hex3HexNAc3 |
| 1842.3 | 1842.7 | Fuc1NeuAc2Hex3HexNAc3 |
| 1922.2 | 1922.6 | SO3Fuc1NeuAc2Hex3HexNAc3 |
| 2068.5 | 2068.7 | SO3Fuc2NeuAc2Hex3HexNAc3 |
| N-glycans | ||
| 2011.5 | 2011.7 | SO3Fuc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2076.6 | 2076.7 | NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2117.7 | 2117.8 | NeuAc1Hex1HexNAc3 + Man3GlcNAc2Fuc1 |
| 2156.5 | 2156.7 | SO3NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2222.6 | 2222.8 | Fuc1NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2279.6 | 2279.8 | NeuAc1Hex2HexNAc3 + Man3GlcNAc2Fuc1 |
| 2302.5 | 2302.8 | SO3Fuc1NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2367.8 | 2367.8 | NeuAc2Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2441.6 | 2441.9 | NeuAc1Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 2447.7 | 2447.8 | SO3NeuAc2Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2482.7 | 2482.9 | NeuAc1Hex2HexNAc4 + Man3GlcNAc2Fuc1 |
| 2588.5 | 2588.4* | NeuAc2Hex3HexNAc3 + Man3GlcNAc2 |
| 2594.5 | 2595.4* | SO3Fuc1NeuAc2Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2646.0 | 2646.4* | NeuAc1Hex3HexNAc4 + Man3GlcNAc2Fuc1 |
| 2734.5 | 2734.5* | NeuAc2Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 2808.1 | 2808.6* | NeuAc1Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| 2849.3 | 2849.6* | NeuAc1Hex3HexNAc5 + Man3GlcNAc2Fuc1 |
| 2880.3 | 2880.6* | Fuc1NeuAc2Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 2937.3 | 2937.7* | NeuAc2Hex3HexNAc4 + Man3GlcNAc2Fuc1 |
| 3011.0 | 3011.8* | NeuAc1Hex4HexNAc5 + Man3GlcNAc2Fuc1 |
| 3026.0 | 3025.8* | NeuAc3Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 3099.3 | 3099.8* | NeuAc2Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| 3172.0 | 3171.9* | Fuc1NeuAc3Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 3301.5 | 3303.0* | NeuAc2Hex4HexNAc5 + Man3GlcNAc2Fuc1 |
| 3390.9 | 3391.1* | NeuAc3Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| 3681.7 | 3682.4* | NeuAc4Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| Signal observed, m/z . | Signal calculated, m/z . | Composition . |
|---|---|---|
| O-glycan alditols | ||
| 675.0 | 675.3 | NeuAc1Hex1HexNAc1 |
| 829.1 | 829.2 | SO3Hex2HexNAc2 |
| 966.2 | 966.3 | NeuAc2Hex1HexNAc1 |
| 975.2 | 975.3 | SO3Fuc1Hex2HexNAc2 |
| 1040.3 | 1040.4 | NeuAc1Hex2HexNAc2 |
| 1120.2 | 1120.3 | SO3NeuAc1Hex2HexNAc2 |
| 1186.4 | 1186.4 | Fuc1NeuAc1Hex2HexNAc2 |
| 1266.3 | 1266.4 | SO3Fuc1NeuAc1Hex2HexNAc2 |
| 1331.4 | 1331.5 | NeuAc2Hex2HexNAc2 |
| 1411.3 | 1411.4 | SO3NeuAc2Hex2HexNAc2 |
| 1485.3 | 1485.5 | SO3NeuAc1Hex3HexNAc3 |
| 1557.3 | 1557.5 | SO3Fuc1NeuAc2Hex2HexNAc2 |
| 1631.3 | 1631.5 | SO3Fuc1NeuAc1Hex3HexNAc3 |
| 1696.3 | 1696.6 | NeuAc2Hex3HexNAc3 |
| 1776.2 | 1776.6 | SO3NeuAc2Hex3HexNAc3 |
| 1842.3 | 1842.7 | Fuc1NeuAc2Hex3HexNAc3 |
| 1922.2 | 1922.6 | SO3Fuc1NeuAc2Hex3HexNAc3 |
| 2068.5 | 2068.7 | SO3Fuc2NeuAc2Hex3HexNAc3 |
| N-glycans | ||
| 2011.5 | 2011.7 | SO3Fuc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2076.6 | 2076.7 | NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2117.7 | 2117.8 | NeuAc1Hex1HexNAc3 + Man3GlcNAc2Fuc1 |
| 2156.5 | 2156.7 | SO3NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2222.6 | 2222.8 | Fuc1NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2279.6 | 2279.8 | NeuAc1Hex2HexNAc3 + Man3GlcNAc2Fuc1 |
| 2302.5 | 2302.8 | SO3Fuc1NeuAc1Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2367.8 | 2367.8 | NeuAc2Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2441.6 | 2441.9 | NeuAc1Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 2447.7 | 2447.8 | SO3NeuAc2Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2482.7 | 2482.9 | NeuAc1Hex2HexNAc4 + Man3GlcNAc2Fuc1 |
| 2588.5 | 2588.4* | NeuAc2Hex3HexNAc3 + Man3GlcNAc2 |
| 2594.5 | 2595.4* | SO3Fuc1NeuAc2Hex2HexNAc2 + Man3GlcNAc2Fuc1 |
| 2646.0 | 2646.4* | NeuAc1Hex3HexNAc4 + Man3GlcNAc2Fuc1 |
| 2734.5 | 2734.5* | NeuAc2Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 2808.1 | 2808.6* | NeuAc1Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| 2849.3 | 2849.6* | NeuAc1Hex3HexNAc5 + Man3GlcNAc2Fuc1 |
| 2880.3 | 2880.6* | Fuc1NeuAc2Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 2937.3 | 2937.7* | NeuAc2Hex3HexNAc4 + Man3GlcNAc2Fuc1 |
| 3011.0 | 3011.8* | NeuAc1Hex4HexNAc5 + Man3GlcNAc2Fuc1 |
| 3026.0 | 3025.8* | NeuAc3Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 3099.3 | 3099.8* | NeuAc2Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| 3172.0 | 3171.9* | Fuc1NeuAc3Hex3HexNAc3 + Man3GlcNAc2Fuc1 |
| 3301.5 | 3303.0* | NeuAc2Hex4HexNAc5 + Man3GlcNAc2Fuc1 |
| 3390.9 | 3391.1* | NeuAc3Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
| 3681.7 | 3682.4* | NeuAc4Hex4HexNAc4 + Man3GlcNAc2Fuc1 |
Calculated values refer to monoisotopic masses except values marked with an asterisk (*), which are average masses.
Hex indicates hexose; HexNAc, N-acetylhexosamine; NeuAc, N-acetylneuraminic acid; Fuc, fucose; SO3, sulfate; Man, mannose; and GlcNAc, N-acetylglucosamine.