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. Author manuscript; available in PMC: 2023 Mar 6.
Published in final edited form as: Rapid Commun Mass Spectrom. 2021 Dec 23;38(Suppl 1):e9189. doi: 10.1002/rcm.9189

Table 20.

Quenching of Enzyme

Processing time Step Comments / Tips
15–30 minutes Discard filters. Acidifying the peptide solution quenches the trypsin protease.
Add 4.2 μL of 6 M HCl to each sample.