| PTM | Post-translational modification |
| ACE | Angiotensin-converting enzyme |
| LC/MS | Liquid chromatography/mass spectrometry |
| u-HPLC | Ultra-high-performance liquid chromatography |
| Q-TOF-MS | Quadrupole-time-of-flight mass spectrometry |
| DDA | Data-dependent acquisition |
| IDA | Information-Dependent acquisition |
| VPP | Variable peptide processing |
| PCA | Principal component analysis |
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