Table II Comparison of identified peptides harboring the C-terminal EGYR target sequence

Peptide identification was performed using Mascot search algorithms with peptide fragment mass spectra generated by MALDI-TOF/TOF analyses.

Protein nameAmino acid sequencem/zReported human plasma levelPeak detected without/with ultracentrifugation
Coagulation factor IXVVCSCTEGYR1230.494 μg/ml (Ref. 48)+/+
Isoform 2 of filamin-AMDCQECPEGYR1444.4835 ng/ml (Ref. 35)−/+
Vitamin K-dependent protein SNIPGDFECECPEGYR1842.6825 μg/ml (Ref. 39)+/+