Δm | ΔRt | # of spectral pairs (pp> 0.98) | Modification type | Theoretical mass | Unimod AC # | ||
---|---|---|---|---|---|---|---|
Mean | ± 3Sigma | Mean | ± 3Sigma |  |  |  |  |
53.9177 | ± 0.0180 | -15.3 | ± 222.3 | 5236 | Cation:Fe(II) | 53.9193 | None |
15.9942 | ± 0.0090 | -685.3 | ± 762.3 | 4613 | Oxidation | 15.9949 | 35 |
0.9959 | ± 0.0395 | 47.4 | ± 254.9 | 305 | Amidation/Deamidation | 0.9840 | 2/7 |
18.01 | N/A | N/A | N/A | N/A | Water-loss/Glu → pyro-Glu* | 18.0106 | 23/27 |
57.02 | N/A | N/A | N/A | N/A | Carbamidomethylation* | 57.0215 | 4 |