The article examines the role of EzrA on the cell elongation of a bacillus subtilis. A study suggests that strong reproducible interactions between gspB and EzrA were observed in cell division and morphogenesis. Also, the same interactions were observed between gpsB and EzrA, and between them is two proteins including MreC and penicillin-binding protein 1 (PBP1). It concludes that in bacillus subtilis, the switch between cell elongation and cell division is controlled by PBP1 that requires EzrA.