Medical Molecular Morphology

, Volume 52, Issue 4, pp 226–234 | Cite as

Molecular association of FtsZ with the intrabacterial nanotransportation system for urease in Helicobacter pylori

  • Hong WuEmail author
  • Noritaka Iwai
  • Youichi Suzuki
  • Takashi Nakano
Original Paper


Helicobacter pylori possesses intrabacterial nanotransportation system (ibNoTS) for transporting CagA, VacA, and urease within the bacterial cytoplasm, which is controlled by the extrabacterial environment. The route of ibNoTS for CagA is reported to be associated with the MreB filament, whereas the route of ibNoTS for urease is not yet known. In this study, we demonstrated by immunoelectron microscopy that urease along the route of ibNoTS localizes closely with the FtsZ filament in the bacterium. Supporting this, we found by enzyme immunoassay and co-immunoprecipitation analysis that urease interacted with FtsZ. These findings indicate that urease along the route of ibNoTS is closely associated with the FtsZ filament. Since these phenomena were not observed in ibNoTS for CagA, the route of ibNoTS for CagA is different from that of ibNoTS for urease. We propose that the route of ibNoTS for urease is associated with the FtsZ filament in H. pylori.


Helicobacter pylori FtsZ Urease Intrabacterial nanotransportation system Immunoelectron microscopy 



We thank Mr. Yoshihiko Fujioka and Ms. Yukiko Takada of the Department of Microbiology and Infection Control, Osaka Medical College, for their technical help. We also thank Ms. Hiromi Norimitsu for her help in the preparation of the manuscript.


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Copyright information

© The Japanese Society for Clinical Molecular Morphology 2019

Authors and Affiliations

  1. 1.Project Team for Study of Nanotransportation System, Research & development CenterOsaka Medical CollegeOsakaJapan
  2. 2.Department of Microbiology and Infection ControlOsaka Medical CollegeOsakaJapan
  3. 3.Graduate School of Bioscience and BiotechnologyTokyo Institute of TechnologyKanagawaJapan

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