Proteotyping results of the twelve representative strains included in the study (averages of triplicate analyses).

The number of species-unique peptide matches and accuracies (%), using the two databases are shown in the columns headed “Initial Database” and “Curated Database”. A minimum threshold of five peptide matches per species was used in the analysis. The improvement in accuracies for S. mitis and S. pseudopneumoniae is highlighted in bold.