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Figure 3 | BMC Research Notes

Figure 3

From: Label-free peptide profiling of Orbitrap™ full mass spectra

Figure 3

A pair-wise comparison of overlapping peptide masses, each time between the peptide profile matrices of two MS1 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 two peptide profile matrices for the software packages Peptrix, Sieve™, Progenesis™ and msInspect were matched with this grid in the comparison matrix, using a mass window with 10 ppm in two directions and a total distance of 20 ppm.

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