Cell division protein that is involved in the assembly of the Z ring. May serve as a membrane anchor for the Z ring (By similarity). Increased expression restores growth to a PBP2b (penA) deletion strain as well as mreCD and rodA deletions, but not gpsB or rodZ deletions. Does not restore wild-type cell morphology to the penA deletion (PubMed:28941257). Self-interacts. Interacts with FtsZ. Localizes to the Z ring in an FtsZ-dependent manner. Targeted to the membrane through a conserved C-terminal amphiphatic helix. Protein level is negatively regulated by KhpA/KhpB partly at the post-transcriptional level via its 5'-UTR (at protein level). Belongs to the FtsA/MreB family.