How to Analyze Histone Phosphorylation Using Mass Spectrometry

Analyze histone phosphorylation with phosphatase control, histone enrichment, propionylation, TiO2 or IMAC enrichment, and high-resolution LC-MS/MS with localization scoring.

Key takeaways

• Acid extraction enriches histones.
• Propionylation improves peptide length for MS.
• TiO2/IMAC enriches phosphopeptides.
• ETD helps preserve labile phospho sites.







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FAQ

Why propionylate histones? Blocks lysine over-cleavage and stabilizes other PTMs during digestion.

HCD or ETD? Use ETD when phosphate loss in HCD limits localization.

Conclusion

Robust histone phospho MS pairs prep chemistry with enrichment and careful spectral review.