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High-resolution MS capability : Sub-ppm mass accuracy and deep proteome coverage enabled by Orbitrap Fusion Lumos and Q Exactive HF platforms Optimized enrichment workflow : GSH-targeted capture strategy enhances signal-to-noise ratio and recovers low-abundance S-glutathionylation sites Multi-PTM analysis compatibility : Supports co-enrichment and analysis with phosphorylation, ubiquitination, and nitrosylation for PTM crosstalk mapping End-to-end project adaptability : Flexible options for sample preparation, experimental design, and data reporting tailored to research needs Broad sample compatibility : Applicable to cell lysates, tissues, plasma/serum, and purified proteins across various biological systems Applications Our S-Glutathionylation Proteomics Service supports multiple research and preclinical use cases: Redox and stress signaling: Characterize dynamic redox-sensitive cysteine modifications under oxidative challenge Disease mechanism exploration: Construct SSG modification maps in models of cardiovascular, oncological, or neurodegenerative diseases Drug response and antioxidant evaluation: Track SSG shifts in response to GSH modulators, redox-targeted therapies, or dietary interventions Environmental toxicology: Study S-glutathionylation changes in response to pollutants, radiation, or chemical exposures Biomarker discovery: Identify site-specific SSG events with diagnostic or therapeutic potential Case Study Case 1: Mapping S-glutathionylation on Cardiac Myosin via Top-Down Proteomics In a study, researchers applied top-down mass spectrometry to map endogenous S-glutathionylation (SSG) on ventricular myosin light chain-1 (MLC-1v)