Table 1. Nuclear envelope remnant phospholipid species are mainly polyunsaturated and arachidonyl.
| PtdCho species | PtdEth species | PtdIns species |
| 18∶1/20∶4 | 18∶0/20∶1 | 18∶0/20∶4 |
| 18∶0/20∶4 | 18∶0/20∶0 | 18∶2/20∶4 |
| 20∶1/20∶4 | 18∶1/20∶4 | 20∶1/20∶4 |
| 20∶1/20∶3 | 18∶0/20∶4 | 20∶0/20∶4 |
| 20∶2/20∶4 | 18∶0a/20∶4 | 18∶0a/20∶4 |
| 16∶0/20∶4 | 20∶0a/20∶4 | 20∶0a/20∶4 |
| 20∶1a/20∶4 | ||
| 18∶0a/20∶4 | ||
| 16∶0/20∶3 | ||
| 18∶2/20∶4 | ||
| 18∶1a/20∶4 | ||
| 20∶0/22∶6 | ||
| 20∶1a/20∶5 | ||
| 20∶0/24∶4 | ||
| 24∶0/24∶5 | ||
| 20∶0/24∶5 | ||
| 24∶0/24∶6 | ||
| 16∶0a/20∶4 |
PtdCho, PtdEth and PtdIns species extracted from L. pictus 0.1% nuclei were characterized using the precursor ion scans of +184m/z, −196m/z and −241m/z respectively. Both alkyl-acyl (denoted by ‘a’) and diacyl species were mostly arachidonyl on their sn2 positions. Lipid species are listed by descending order of abundance.