TABLE 1.
Ion Assignment | Theoretical m/z | Experimental m/z | Mass Difference (ppm) | Relative Intensity (%) |
+2 Charge State | ||||
b4+ | 534.2671 | 534.2670 | 0.19 | 4.39 |
b9+2 | 583.2987 | 583.2988 | −0.17 | 38.78 |
b5+ | 647.3511 | 647.3522 | −1.70 | 2.02 |
b6+ | 784.4100 | 784.4067 | 0.38 | 100 |
b7+ | 881.4628 | 881.4639 | −1.25 | 2.56 |
b8+ | 1028.5312 | 1028.5331 | −1.85 | 32.54 |
y2+ | 269.1608 | 269.1609 | −0.37 | 8.85 |
y4+ | 513.2820 | 513.2823 | −0.58 | 43.34 |
y6+ | 763.4244 | 763.4250 | −0.79 | 2.03 |
y7+ | 926.4883 | 926.4891 | −0.86 | 1.24 |
y8+ | 1025.5567 | 1025.5605 | −3.71 | 2.23 |
+3 Charge State | ||||
b6+2 | 392.7087 | 392.7085 | 1.37 | 32.74 |
b4+ | 534.2671 | 534.2667 | 0.75 | 12.06 |
b9+2 | 583.2987 | 583.2979 | 1.37 | 91.87 |
b5+ | 647.3511 | 647.3501 | 1.54 | 88.65 |
b6+ | 784.4100 | 784.4091 | 1.15 | 26.56 |
b8+ | 1028.5312 | 1028.5278 | 3.31 | 2.59 |
y2+ | 269.1608 | 269.1609 | −0.37 | 5.88 |
y5+2 | 325.6741 | 325.6735 | 1.84 | 4.05 |
y3+ | 416.2292 | 416.2289 | 0.72 | 3.31 |
y8+ | 513.2820 | 513.2816 | 0.78 | 100 |
The relative intensity reported is for each separate MS/MS spectrum.