TABLE 4.
Comparative Myoglobin Tryptic Peptide Mass Accuracies for All Detected Charge States from Full Scan Mass Spectral Data Acquired in the ICR Cell at a Resolution Setting of 50,000
| Peptide Identification | Sequence | Charge State | Theoretical m/z | Experimental m/z | Mass Error (ppm) |
| T1 | GLSDGEWQQVLNVWGK | +2 | 908.4549 | 908.4563 | −1.4 |
| +3 | 605.9723 | 605.9732 | −0.9 | ||
| T2 | VEADIAGHGQEVLIR | +2 | 803.9310 | 803.9306 | 0.4 |
| +3 | 536.2898 | 536.2895 | 0.3 | ||
| T3 | LFTGHPETLEK | +1 | 1271.6630 | 1271.6614 | 1.6 |
| +2 | 636.3352 | 636.3346 | 0.6 | ||
| +3 | 424.5592 | 424.5589 | 0.3 | ||
| T7 | TEAEMK | +1 | 708.3233 | 708.3229 | 0.4 |
| T8 | ASEDLK | +1 | 662.3356 | 662.3352 | 0.4 |
| T10–T11 | HGTVVLTALGGILKK | +2 | 753.9720 | 753.9724 | −0.4 |
| +3 | 502.9837 | 502.9837 | 0.0 | ||
| T13–T14 | GHHEAELKPLAQSHATK | +2 | 927.4845 | 927.4842 | 0.3 |
| +3 | 618.6587 | 618.6585 | 0.2 | ||
| +4 | 464.2459 | 464.2456 | 0.3 | ||
| T14 | PLAQSHATK | +1 | 952.5211 | 952.5204 | 0.7 |
| +2 | 476.7642 | 476.7639 | 0.3 | ||
| T15–T16 | HKIPIK | +1 | 735.4876 | 735.4869 | 0.7 |
| T17 | YLEFISDAIIHVLHSK | +2 | 943.0146 | 943.0154 | 0.9 |
| +3 | 629.0121 | 629.0123 | 0.3 | ||
| +4 | 472.0109 | 472.0110 | 0.2 | ||
| T18 | HPGDFGADAQGAMTK | +2 | 751.8383 | 751.8380 | 0.3 |
| +3 | 501.5613 | 501.5611 | 0.2 | ||
| T19 | ALELFR | +1 | 748.4352 | 748.4344 | 0.8 |
| T20 | NDIAAK | +1 | 631.3410 | 631.3408 | 0.2 |
| T21–T22 | YKELGFQG | +1 | 941.4727 | 941.4719 | 0.8 |