Table 1.
Representative CL species identified using high mass resolution/high mass accuracy and tandem mass spectrometry analyses.
| Measured m/z | Lipid Class[a] | Tentative Attribution | Exact m/z | Mass Error (ppm)[c] | Proposed Formula |
|---|---|---|---|---|---|
| 592.3641 | MLCL | CL(54:5) | 592.3640 | 0.2 | C63H112O16P2 |
| 669.4135 | ox-CL[b] | 20:4/18:2/16:0/9:1(OH) | 669.4137 | −0.2 | C72H126O18P2 |
| 677.4108 | ox-CL | 18:2/18:2/18:2/9:1(OOH) | 677.4112 | −0.1 | C72H126O19P2 |
| 678.4187 | ox-CL | 18:2/18:2/18:1/9:1(OOH) | 678.4190 | −0.3 | C72H128O19P2 |
| 689.4292 | ox-CL | 18:2/18:2/18:2/12:2(OH) | 689.4293 | −0.2 | C75H130O18P2 |
| 690.4352 | ox-CL | 18:2/18:2/18:1/12:2(OH) 20:4/18:1/16:0/12:2(OH) |
690.4372 | −2.8 | C75H132O18P2 |
| 697.4279 | ox-CL | CL(OO-65:8) | 697.4268 | 1.1 | C75H130O19P2 |
| 697.4635 | CL | 18:2/18:2/18:2/14:0 20:2/18:2/16:2/14:0 |
697.4632 | 0.5 | C77H138O17P2 |
| 701.4929 | CL | 18:1/18:1/18:0/14:0 | 701.4945 | −0.5 | C77H146O17P2 |
| 706.4869 | CL | 18:2/18:1/18:1/15:0 | 706.4867 | 0.3 | C78H144O17P2 |
| 710.4709 | CL | 18:2/18:2/18:2/16:1 | 710.4710 | 0.1 | C79H140O17P2 |
| 723.4789 | CL | 18:2/18:2/18:2/18:2 20:4/18:2/18:2/16:0 |
723.4788 | 0.1 | C81H142O17P2 |
| 724.4851 | CL | 18:2/18:2/18:2/18:1 20:2/18:2/18:1/16:2 |
724.4867 | −1.7 | C81H144O17P2 |
| 732.4821 | ox-CL | 18:2/18:1/19:1/17:3(OH) 18:4(OH)/18:2/18:1/16:0 |
730.4841 | −2.8 | C81H142O18P2 |
| 735.4783 | CL | 20:4/18:2/18:2/18:2 | 735.4788 | −0.7 | C83H142O17P2 |
| 736.4866 | CL | 20:4/18:2/18:2/18:1 20:3/18:2/18:2/18:2 |
736.4867 | −0.1 | C83H144O17P2 |
| 737.4944 | CL | 20:4/18:2/18:1/18:1 20:3/18:2/18:2/18:1 20:2/18:2/18:2/18:2 |
737.4945 | −0.1 | C83H146O17P2 |
| 738.5022 | CL | 20:4/20:2/18:1/16:0 20:3/18:2/18:1/18:1 20:2/18:2/18:2/18:1 |
738.5023 | −0.2 | C83H148O17P2 |
| 745.4914 | ox-CL | CL(O74:8) | 745.4910 | −0.7 | C83H144O18P2 |
| 747.4780 | CL | 22:6/20:4/18:2/16:0 | 747.4788 | −0.8 | C85H142O17P2 |
| 1034.7526 | CL+DG | CL+DG(108:9) | 1034.7556 | −2.9 | C120H216O22P2 |
| 1035.7604 | CL+DG | CL+DG(108:8) | 1035.7635 | −3.0 | C120H218O22P2 |
| 1047.7614 | CL+DG | CL+DG(110:10) | 1047.7635 | −2.0 | C122H220O22P2 |
| 1102.2593 | CL+PC | CL+PC(106:12) | 1102.2599 | −0.5 | C123H222O25NP3 |
| 1117.2816 | CL+PC | CL+PC(108:9) | 1117.2834 | −1.6 | C125H228O25NP3 |
[a]
CL = cardiolipin (X:Y) denotes the total number of carbons and double bonds in the fatty acid chains.
[b]
ox-CL =oxidized cardiolipin
[c]
Mass errors were calculated based on the exact monoisotopic m/z of the deprotonated form of the assigned molecules.