Table II. Quantification of synthetic heavy labeled histone peptides. The highlighted amino acids mean that they are heavy, for example, the heavy A has more of 4.0071 Da than the light A.
| Endogenous peptides | Synthetic peptides | RT(min) | Area | Ratio | |||||
|---|---|---|---|---|---|---|---|---|---|
| TKQTAR | (+1) | (+2) | (+1) | (+2) | |||||
| TKQTAR | 816.458 | 408.733 | 820.465 | 410.736 | 18.34 | 1.56E+09 | 0.156 | ||
| TKme1QTAR | 830.474 | 415.741 | 834.481 | 417.744 | 21.58 | 6.72E+09 | 0.671 | ||
| TKme2QTAR | 788.463 | 394.735 | 792.470 | 396.739 | 10.82 | 8.19E+08 | 0.082 | ||
| TKme3QTAR | 802.478 | 401.743 | 806.485 | 403.747 | 10.82 | 7.15E+08 | 0.071 | ||
| TphKQTAR | 896.424 | 448.716 | 900.431 | 450.719 | 18.22 | 2.07E+08 | 0.021 | ||
| KSTGGKAPR | (+1) | (+2) | (+3) | (+1) | (+2) | (+3) | |||
| KSTGGKAPR | 1069.601 | 535.304 | 357.205 | 1075.614 | 538.311 | 359.210 | 23.2 | 2.98E+10 | 0.189 |
| Kme1STGGKAPR | 1083.616 | 542.312 | 361.877 | 1089.630 | 545.319 | 363.882 | 25.91 | 2.72E+10 | 0.173 |
| Kme2STGGKAPR | 1041.606 | 521.307 | 347.874 | 1047.619 | 524.314 | 349.878 | 16.61 | 1.14E+10 | 0.072 |
| Kme3STGGKAPR | 1055.621 | 528.314 | 352.545 | 1067.642 | 534.325 | 356.553 | 16.46 | 5.69E+09 | 0.036 |
| KacSTGGKAPR | 1055.584 | 528.296 | 352.533 | 1061.598 | 531.303 | 354.538 | 21.68 | 1.51E+10 | 0.096 |
| KSTGGKacAPR | 1055.584 | 528.296 | 352.533 | 1064.602 | 532.805 | 355.539 | 21.93 | 1.66E+10 | 0.105 |
| Kme1STGGKacAPR | 1069.601 | 535.304 | 357.205 | 1075.614 | 538.311 | 359.210 | 24.68 | 3.17E+10 | 0.201 |
| Kme2STGGKacAPR | 1027.589 | 514.299 | 343.202 | 1033.603 | 517.306 | 345.206 | 14.95 | 5.73E+09 | 0.036 |
| Kme3STGGKacAPR | 1041.606 | 521.307 | 347.874 | 1051.625 | 526.317 | 351.214 | 14.86 | 5.14E+09 | 0.033 |
| KacSTGGKacAPR | 1041.568 | 521.288 | 347.861 | 1047.582 | 524.295 | 349.866 | 20.23 | 9.09E+09 | 0.058 |