Table 2.
Predicted and observed masses of glucolipid sodium adducts analyzed by MALDI-TOF MS in the positive-ion mode
| Possible fatty acid chain length | Chemical formula | Predicted molecular mass | Observed mass |
||
|---|---|---|---|---|---|
| WT | ΔgtaB Phyper-gtaB | ΔgtaB Phyper-yngB | |||
| Top band: Glc2-DAG | |||||
| (30:0) | C45H84Na1O15 | 887.57 | 887.51 | 887.94 | 887.90 |
| (31:0) | C46H86Na1O15 | 901.59 | 901.95 | 901.97 | 901.81 |
| (32:0) | C47H88Na1O15 | 915.60 | 915.95 | 915.87 | 915.91 |
| Mid band: Glc3-DAG | |||||
| (30:0) | C51H94Na1O20 | 1049.62 | 1049.85 | 1049.90 | 1049.77 |
| (31:0) | C52H96Na1O20 | 1063.64 | 1063.85 | 1063.90 | 1063.93 |
| (32:0) | C53H98Na1O20 | 1077.65 | 1077.85 | 1077.38 | 1077.90 |