DivIVA is required for polar growth in the MreB-lacking rod-shaped actinomycete Corynebacterium glutamicum.
Författare
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.
Avdelning/ar
Publiceringsår
2008
Språk
Engelska
Sidor
3283-3292
Publikation/Tidskrift/Serie
Journal of Bacteriology
Volym
190
Dokumenttyp
Artikel i tidskrift
Förlag
American Society for Microbiology
Ämne
- Microbiology
Status
Published
Forskningsgrupp
- Microbiology Group
ISBN/ISSN/Övrigt
- ISSN: 0021-9193