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. Author manuscript; available in PMC: 2020 Jul 2.
Published in final edited form as: Anal Chem. 2019 Jun 13;91(13):8516–8523. doi: 10.1021/acs.analchem.9b01732

Figure 2.

Figure 2.

Experimental workflow to evaluate the influence of higher-order structure (i.e. microenvironment effects) on covalent labeling by comparing the DEPC labeling reactivity of (a) intact proteins with that of (b) their N-terminally acetylated peptide fragments.