TABLE 7.
Identification of plasma proteolytic degradation fragments of peptides by LC-MS.
| MW.1 | Fragment2 | Location | MW. | Fragment | Location |
| Pep05 | KRLFKKLLKYLRKF | 1764.70 | (K) RLThiKKLLKYLRKThi | 2–14 | |
| 1596.64 | (R) LFKKLLKYLRKF | 3–14 | 1892.52 | KRLThiKKLLKYLRKThi | 1–14 |
| 1752.15 | (K) RLFKKLLKYLRKF | 2–14 | UP08 | KRLFKKLLKYLRKThi | |
| 1880.20 | KRLFKKLLKYLRKF | 1–14 | 1488.56 | (L) FKKLLKYLRKThi | 4–14 |
| LP01 | KRLFKRLFKYLRRF | 1886.52 | KRLFKKLLKYLRKThi | 1–14 | |
| 293.17 | (L) FK (R) | 4–5 | UP09 | AibRLFKKLLKYLRKThi | |
| 293.17 | (L) FK (Y) | 8–9 | 1601.68 | (R) LFKKLLKYLRKThi | 3–14 |
| 752.88 | (K) YLRRF | 10–14 | 1843.00 | AibRLFKKLLKYLRKThi | 1–14 |
| 1842.28 | (K) RLFKRLFKYLRRF | 2–14 | UP10 | HorRLFKKLLKYLRKThi | |
| 1970.40 | KRLFKRLFKYLRRF | 1–14 | 1601.50 | (R) LFKKLLKYLRKThi | 3–14 |
| LP02 | RRIFKRLFKYLRRF | 1757.90 | (Hor) RLFKKLLKYLRKThi | 2–14 | |
| 1687.05 | (R) IFKRLFKYLRRF | 3–14 | 1928.65 | HorRLFKKLLKYLRKThi | 1–14 |
| 1841.75 | (R) RIFKRLFKYLRRF | 2–14 | UP11 | DapHorLFDapDapLLDabYLHorDabThi | |
| 1998.60 | RRIFKRLFKYLRRF | 1–14 | 1645.70 | (Dap) HorLFDapDapLLDabYLHorDabThi | 2–14 |
| DP03 | KRLFKKLLKYLRkF | 1731.58 | DapHorLFDapDapLLDabYLHorDabThi | 1–14 | |
| 562.49 | (K) RLFK(K) | 2–5 | UP12 | DabHorLFDabDabLLDabYLRDabF | |
| 1449.22 | KRLFKKLLKYL (R) | 1–11 | 1483.68 | (Hor) LFDabDabLLDabYLRDabF | |
| 1753.56 | (K) RLFKKLLKYLRkF | 2–14 | 1654.15 | (Dab) HorLFDabDabLLDabYLRDabF | 3–14 |
| 1880.20 | KRLFKKLLKYLRkF | 1–14 | 1753.95 | DabHorLFDabDabLLDabYLRDabF | 1–14 |
| DP04 | KRLFkkLLKYLRkF | UP13 | DabHorLFDabDabLLDabYLHorDabF | ||
| 562.58 | KRLF (k) | 1–4 | 1497.92 | (Hor) LFDabDabLLDabYLHorDabF | 3–14 |
| 562.58 | (Y) LRkF | 11–14 | 1668.25 | (Dab) HorLFDabDabLLDabYLHorDabF | 2–14 |
| 1880.25 | KRLFkkLLKYLRkF | 1–14 | 1767.85 | DabHorLFDabDabLLDabYLHorDabF | 1–14 |
| DP05 | krLFkkLLKYLRkF | UP14 | DapHorLFDapDapLLDabYLHorDabF | ||
| 725.64 | (K) YLRkF | 10–14 | 1473.80 | (Hor) LFDapDapLLDabYLHorDabF | 3–14 |
| 1045.28 | krLFkkLL (K) | 1–8 | 1640.30 | (Dap) HorLFDapDapLLDabYLHorDabF | 2–14 |
| 1880.22 | krLFkkLLKYLRkF | 1–14 | 1726.00 | DabHorLFDabDabLLDabYLHorDabF | 1–14 |
| DP06 | krLFkkLLkYLrkF | UP15 | DabRLThiDapDabLLDabYLHorDabF | ||
| 1880.22 | krLFkkLLkYLrkF | 1–14 | 1489.92 | (R) LThiDapDabLLDabYLHorDab F | 3–14 |
| UP07 | KRLThiKKLLKYLRKThi | 1646.10 | (Dab) RLThiDapDabLLDabYLHorDabF | 2–14 | |
| 1607.98 | (R) LThiKKLLKYLRKThi | 3–14 | 1745.60 | DabRLThiDapDabLLDabYLHorDabF | 1–14 |
1The molecular weight of some fragments were calculated by a series of multiply charged ions. 2Fragments were produced when peptides were cleaved between the residues in the brackets and out of the brackets.