Figure 2:Data Analysis Pathway. (A) Virtual Array of 289 peptide sequences assigned to proteomes of 209 bacteria; (B) Histogram of the number of matching sequences assigned to ‘super-proteomes’ of 13 phyla obtained by merging database bacteria according to their taxonomic position; (C) cluster analysis of a sequenceto- organism assignment matrix for Firmicutes; (D) cluster analysis of a sequence-to-organism assignment matrix for Proteobacteria.