Table II

Characteristics of the two β -actin modified peptides

The sequences corresponding to each tryptic peptide are indicated with the positions of the first and the last amino acids. Mox indicates methionine oxidation, and * indicates the potential site of O-GlcNAcylation. For each peptide, the number of missed cleavages, the theoretical precursor ion m/z peptide, and the theoretical precursor ion of the peptide with biotin/GalNAz/O-GlcNAc labeling are presented.

PeptideMissed cleavagesTheoretical precursor ion m/zTheoretical precursor ion m/z with biotin/GalNAz/O-GlcNAc labeling
316EITALAPST*MoxK32601177.61332153.1733
313MQKEITALAPST*MK32611548.81242524.3724