Abstract:
:Fluorescent polyclonal antibodies specific for MukB have been used to study its localization in Escherichia coli. In wild-type cells, the MukB protein appeared as a limited number of oblong shapes embracing the nucleoid. MukB remained associated with the nucleoid in the absence of DNA replication. The centre of gravity of the dispersed MukB signal initially localized near mid-cell, but moved to approximately quarter positions well before the termination of DNA replication and its subsequent reinitiation. Because MukB had been reported to bind to FtsZ and to its eukaryotic homologue tubulin in vitro, cells were co-labelled with MukB- and FtsZ-specific fluorophores. No co-localization of MukB with polymerized FtsZ (the FtsZ ring) was observed at any time during the cell cycle. A possible role for MukB in preventing premature FtsZ polymerization and in DNA folding that might assist DNA segregation is discussed.
journal_name
Mol Microbioljournal_title
Molecular microbiologyauthors
den Blaauwen T,Lindqvist A,Löwe J,Nanninga Ndoi
10.1046/j.1365-2958.2001.02691.xsubject
Has Abstractpub_date
2001-12-01 00:00:00pages
1179-88issue
5eissn
0950-382Xissn
1365-2958pii
2691journal_volume
42pub_type
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