Figure 5From: ProMEX: a mass spectral reference database for proteins and protein phosphorylation sitesComparison of peptide identification rate as a function of match score. True positive identifications are all matches found by SEQUEST and ProMEX. False positives are defined as residual peptide identifications by ProMEX which did not match to the SEQUEST hits. The default threshold value for ProMEX was set to 0.5 according to this diagram.Back to article page