Figure 7From: Harvest: an open-source tool for the validation and improvement of peptide identification metrics and fragmentation explorationRelative isoelectric point (pI) of y ions over complementary b ions plotted by location of the fragmentation location between the N and C terminal (proportional). Red points show the relative pI of y ions for which the complementary b ion was not detected in the spectrum and the blue points show the relative pI for b ions for which no complementary y ion was found.Back to article page