protein levels (Fig. S2). Interestingly, this region of MurG does not show conservation between B. subtilis and E. coli (Fig. 2A). These residues may correlate with the lack of sporulation in E. coli compared to the additional function of MurG in B. subtilis sporulation. Amphipathic helices are thought to interact with membranes in three steps, the unfolded peptide approaches the