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the principal writer of the manuscript. TS performed the subcloning and transformations of S. saprophyticus and S. carnosus for the complementation of the S. saprophyticus MS1146 sssF mutant, and assisted in editing the manuscript. Y-27632 2HCl NLBZ prepared Figure 1 and Additional file 1: Table S1 and assisted in writing and editing the manuscript. MT performed the electron microscopy and assisted in editing the manuscript. BH performed the structural predictions of SssF and prepared Figure 2B and 2C. PS participated in the RP-HPLC and assisted in editing the manuscript. MS participated in the RP-HPLC and assisted in editing the manuscript. SGG provided the German sssF prevalence data and assisted in editing the manuscript. SAB co-directed the research and assisted in writing and editing the manuscript. MAS directed the research and assisted in writing and editing the manuscript. All authors read and approved the final manuscript.”
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