Fig. 5

Analysis of E. coli contamination level. A Number of PSMs matching E. coli proteins in an otherwise M. acaciae sample by fraction of E. coli in the sample. B Number of E. coli PSMs found in samples that were not purposely mixed with E. coli. Samples 1 and 2 are M. acaciae samples used as control to determine the E. coli contamination level in a supposed “E. coli free” sample. Samples 3 to 8 are C. albicans strains SC5314, EU0006, EU0009, and EU0075, each in yeast and hyphal growth form. The number PSMs found for background E. coli contamination is below the mixture sample with 0.16% E. coli and 99.84% M. acaciae. The number of E. coli PSMs was normalized to 100,000 PSMs for each sample