Information for Peptide: VLQGLPR from ERBB2_HUMAN
1. Biological Peptide
1.1 Native Sequence
R.VLQGLPR.E
1.2 Peptide Properties
| Start | Stop | MW | m/z for 2+ | m/z for 3+ | pI |
|---|---|---|---|---|---|
| 546 | 552 | 781.48 | 391.75 | 261.5 | 9.72 |
1.3 Fragment Ion Table
| AA | b Ion Series | b Ion Mass | y Ion Series | y Ion Mass |
|---|---|---|---|---|
| V | b | y | ||
| L | b | y | ||
| Q | b | y | ||
| G | b | y | ||
| L | b | y | ||
| P | b | y | ||
| R | b | y |
2. Synthetic Peptide
2.1 Synthetic (Internal Standard) Peptide Sequence
VLQGLP(C5N1)R (Modification: Stable Isotope on P6 (U-13C5, 15N) )
2.2 Peptide Properties
| MW | m/z for 2+ | m/z for 3+ | pI |
|---|---|---|---|
| 787.49 | 394.76 | 263.51 | 9.72 |
2.3 Fragment Ion Table
| AA | b Ion Series | b Ion Mass | y Ion Series | y Ion Mass |
|---|---|---|---|---|
| V | b | y | ||
| L | b | y | ||
| Q | b | y | ||
| G | b | y | ||
| L | b | y | ||
| P | b | y | ||
| R | b | y |
2.4 Peptide Synthesis Report
Click to view/download synthesis report for VLQGLPR
2.5 QqQ MS/MS
Transition Table:
| Transition | m/z of Transition | Collision Energy |
|---|---|---|
| y3 | 391.26 | 17.0 |
| y4 | 448.28 | 17.0 |
| y5 | 576.35 | 17.0 |
| y6 | 689.42 | 17.0 |
2.6 Calibration Curve of Standard
Description: NONE
Experiment Description: Cells from Breast cancer SKBR3 cell line were lysed in 8M urea/ 100mM ammonium bicarbonate buffer on ice. The equivalent of 100,000 cells were loaded onto a SDS gel. The protein of interest was excised and ingel digestion with trypsin was performed after reduction and alkylation with TCEP and IAA. 1/4 of the resulting digest was then analyzed on a Thermo Scientific TSQ mass spectrometer. Internal standard has been synthesized and is awaiting analysis with sample.
2.7 LC-MRM Analysis of Biological and Standard Peptides Illustrates Elution Times
2.8 Pseudo MS/MS Comparison of Transition Patterns for Biological/Standard Peptides
