Table 1.
List of m/z values and calculated neutral and observed masses.
Neutral Masses in Da | Expected m/z | Observed m/z | Observed Mass | Delta Mass in Da | Mass Errors in mDa | |
---|---|---|---|---|---|---|
Peptide-1 SEVAHRFKC | 1075.5232 | 538.7689 (+2) | 538.7688 (+2) | 1E-04 | 0.1 | |
Peptide-2 CHWKQNDEQM | 1317.5229 | 659.7688 (+2) | 659.7681 (+2) | 7E-04 | 0.7 | |
Peptide-2 (Ox) CHWKQNDEQM | 1333.5178 | ------------------ | ------------------ | ------------ | ------------ | ------------ |
Iodoacetamide (IA) [added mass] | 58.0292 | ------------------ | ------------------ | ------------ | ------------ | |
3-maleimidopropionic acid (MP) | 169.0375 | ------------------ | ------------------ | ------------ | ------------ | ------------ |
4-vinylpyridine (VP) | 105.0578 | ------------------ | ------------------ | ------------ | ------------ | ------------ |
Peptide-1+IA+[O] | 1148.5395 | 1149.5468 (+1)
575.2771 (+2) |
575.2794(+2) | ------------ | 2.3E-03 | 2.3 |
Peptide-1+MP+[O] | 1260.5556 | 1261.5629 (+1)
631.2851 (+2) |
631.2848 (+2) | ------------ | 3E-04 | 0.3 |
Peptide-1+VP+[O] | 1196.5759 | 1197.5832 (+1)
599.2953 (+1) |
599.2939 (+2) | 1.4E-03 | 1.4 | |
Peptide-2 (Ox)+MP+[O] | 1518.5502 | 1519.5575 (+1)
760.2824 (+2) |
760.2837 (+2) | 1.3E-03 | 1.3 | |
RSOH (IA) | 107.0041 | ------------------ | ------------------ | 107.0048 | 7E-04 | 0.7 |
R+ H2O (MP) | 187.0480 | ------------------ | ------------------ | 187.0470
187.0484 |
1E-03
4E-04 |
1.0
0.4 |
R+ H2O (VP) | 123.0683 | ------------------ | ------------------ | 123.0698 | 1.5E-03 | 1.5 |