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DivIVA is required for polar growth in the MreB-lacking rod-shaped actinomycete Corynebacterium glutamicum.

På svenska

Author

  • Michal Letek
  • Efrén Ordóñez
  • José Vaquera
  • William Margolin
  • Klas Flärdh
  • Luis M Mateos
  • José A Gil

Summary, in English

The actinomycete Corynebacterium glutamicum grows as rod-shaped cells by zonal peptidoglycan synthesis at the cell poles. In this bacterium, experimental depletion of the polar DivIVACG protein resulted in the inhibition of polar growth; consequently, these cells exhibited a coccoid morphology. This result demonstrated that DivIVA is required for cell elongation and the acquisition of a rod shape. DivIVA from Streptomyces or Mycobacterium localized to the cell poles of DivIVACG-depleted C. glutamicum and restored polar peptidoglycan synthesis, in contrast to DivIVAs from Bacillus subtilis or Streptococcus pneumoniae which localized at the septum of C. glutamicum. This confirmed that DivIVAs from actinomycetes are involved in polarized cell growth. DivIVACG localized at the septum after cell-wall synthesis had started and the nucleoids had already segregated, suggesting that in C. glutamicum DivIVA is not involved in cell division or chromosome segregation.

Publishing year

2008

Language

English

Pages

3283-3292

Publication/Series

Journal of Bacteriology

Volume

190

Document type

Journal article

Publisher

American Society for Microbiology

Topic

  • Microbiology

Status

Published

Research group

  • Microbiology Group

ISBN/ISSN/Other

  • ISSN: 0021-9193