ISSN:
1365-2958
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
,
Medicine
Notes:
DivIB, DivIC and FtsL are bacterial proteins essential for cell division, which show interdependencies for their stabilities and localization. We have reconstituted in vitro a trimeric complex consisting of the recombinant extracellular domains of the three proteins from Streptococcus pneumoniae. The extracellular domain of DivIB was found to associate with a heterodimer of those of DivIC and FtsL. The heterodimerization of DivIC and FtsL was artificially constrained by fusion with interacting coiled-coils. Immunofluorescence experiments showed that DivIC is always localized at mid-cell, in contrast to DivIB and FtsL, which are co-localized with DivIC only during septation. Taken together, our data suggest that assembly of the trimeric complex DivIB/DivIC/FtsL is regulated during the cell cycle through controlled formation of the DivIC/FtsL heterodimer.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2958.2004.04408.x
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