Mass spectrometric analysis of tryptic fragments from the Bβ-chain of fibrinogen Longmont
| Fragment corresponding to positions . | Calculated mass . | Observed mass . |
|---|---|---|
| 149-166, normal | 2127.3 | 2127.0 |
| 149-169, abnormal, with pyridylethylated Cys | 2547.9 | Not found |
| 149-169, abnormal, with additional, disulfide-linked Cys | 2561.9 | 2561.8 |
| 149-169, abnormal, with disulfide-linked glutathione | 2748.1 | Not found |
| 149-169, abnormal, after disulfide cleavage | 2442.8 | 2443.1 |
| Fragment corresponding to positions . | Calculated mass . | Observed mass . |
|---|---|---|
| 149-166, normal | 2127.3 | 2127.0 |
| 149-169, abnormal, with pyridylethylated Cys | 2547.9 | Not found |
| 149-169, abnormal, with additional, disulfide-linked Cys | 2561.9 | 2561.8 |
| 149-169, abnormal, with disulfide-linked glutathione | 2748.1 | Not found |
| 149-169, abnormal, after disulfide cleavage | 2442.8 | 2443.1 |