Skip to main content
. Author manuscript; available in PMC: 2019 Aug 21.
Published in final edited form as: Anal Chem. 2018 Aug 7;90(16):9682–9686. doi: 10.1021/acs.analchem.8b02707

Figure 3.

Figure 3.

Observed sequence coverage for hirudin, cholecystokinin, serine- and tyrosine phosphopeptide following various MS/MS techniques (A). Abundance of sequence ions that retain the PTM (B). *: insufficient detection of intact peptide.