Skip to main content
Fig. 2 | BMC Bioinformatics

Fig. 2

From: Scientific workflow optimization for improved peptide and protein identification

Fig. 2

a Mass measurement error distribution (density at 1 % PSM-level FDR) in the E. coli maXis TOF-amaZon ion trap dataset (logarithmic scale) and (b) estimated number of identified correct 2+ spectra as function of MME tolerance in an X!Tandem search, using equal positive and negative MME tolerances and allowing for “isotope error” (dashed, red). When the gaps between the windows centered on each isotope (i.e. 0, 1 and 2 Da) close, the number of 2+ PSMs gained per unit MME (i.e. the derivative of the number of PSMs with respect to the MME) drops drastically (blue)

Back to article page