Figure 4From: Label-free peptide profiling of Orbitrap™ full mass spectraA 4-way Venn diagram representing the numbers of peptide masses in each profile 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 with distances of 20 ppm between the masses. Peak masses from the individual software package peptide profile matrices were matched with the grids for the comparison matrix, using a mass window with 10 ppm in two directions and a total distance of 20 ppm.Back to article page