Figure 6
From: Label-free peptide profiling of Orbitrap™ full mass spectra
A 4-way Venn diagram representing the numbers of peptide masses identified with protein GI's in each matrix for Peptrix, Sieve™, Progenesis™ and msInspect, which match between 1, 2, 3, or 4 software packages. A comparison matrix was constructed by Peptrix using an artificial grid of 20275 masses between 1600 and 2400 Da and distances of 20 ppm between the masses. Peak masses identified with protein GI's from the individual peptide profile matrices for the software packages were matched with the comparison matrix grid, using a mass window with 10 ppm in two directions and a total distance of 20 ppm.