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Relative abundance of oligoalginates in M-blocks samples before and after degradation with AlyA3. Peak at m/z 268.17, corresponding to the buffer, was chosen as internal standard. Compounds starting with the letter “u” are oligosaccharides with an unsaturation at the nonreducing end
| m/z | M blocks w/o AlyA3 | M blocks w AlyA3 | |
|---|---|---|---|
| DEH | 198.88 | 0.428 | 4.035 |
| uDP2 | 374.92 | 0.000 | 0.648 |
| DP2 | 393.22 | 0.398 | 1.275 |
| uDP3 | 550.96 | 0.000 | 0.337 |
| uDP4 | 726.94 | 0.000 | 0.077 |
