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PRM Quantitative Proteomics to detect target protein with high resolution (CAT#: STEM-MB-0090-WXH)

Introduction

Parallel Reaction Monitoring (PRM) is a high-resolution, high-precision mass spectrometry-based ion monitoring technique that enables selective detection of target proteins and target peptides (e.g., peptides undergoing post-translational modifications) for quantification of target proteins/peptides.<br />It is characterized by high specificity, sensitivity and accuracy, and is capable of quantitative protein analysis in batch.<br />The principle is the relative/absolute quantification of proteins using secondary fragment ions. The PRM technique based on the electrostatic field orbital trap Obitrap/Time of Flight TOF mass analyzer is capable of highly specific selection of peptide ions with a preset mass-to-charge ratio and fragmentation, detection of all fragmentation information generated by the peptide, calculation of the intensity of the ions, and thus quantification of the peptide.




Applications

• Validation of histological results: verification of differential proteins, confirmation of mutation sites, confirmation of modification sites, etc.
• Absolute quantification of multiple proteins/peptides simultaneously.
• Study of protein family variations with high homology but lacking specific recognition antibodies.
• Quantitative studies of post-translational modifications of proteins.
• Absolute quantitative studies of biological disease targets.
• Development of clinical diagnostic prediction kits

Procedure

1. Select the target peptide from the shotgun experiment or according to theoretical speculation
2. Preparation of Sample Mixture
3. Pre-experiment adjustment parameters and targeting peptides
4. PRM detection
5. Data analysis

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