FIG. 1.

Schema of the sequential recruitment of essential cell division proteins to the septum in E. coli (A) and B. subtilis (B). Proteins that form a subcomplex independent of other divisomal proteins are surrounded by gray halos. Arrows point to the recruited downstream protein or downstream subcomplex. White bars correspond to direct protein-protein interactions demonstrated by genetic and biochemical approaches. The question mark indicates that the recruitment time of FtsW is unknown in B. subtilis.