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

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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

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.
Originalspråkengelska
Sidor (från-till)3283-3292
TidskriftJournal of Bacteriology
Volym190
DOI
StatusPublished - 2008

Ämnesklassifikation (UKÄ)

  • Mikrobiologi

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