Figure 3. Expression profiles of sequenced bacterial peptides.

Contourplots of the sequenced polypeptides originating from E. coli and E. faecalis in the 5 lots of Pro-Symbioflor and culture medium. To improve visualization of the peptides in this contourplot, the abundance of the peptides was artificially amplified with a factor 3 in relation to Figure 1. The 9 signals shown in culture medium are false positive hits by sequencing via LC-MS/MS. Given that 390 bacterial peptides were identified we obtained an acceptable false discovery rate of below 5%.