Genetic response to metabolic fluctuations: correlation between central carbon metabolism and DNA replication in Escherichia coli

Monika Maciąg , Dariusz Nowicki , Laurent Janniere , Agnieszka Szalewska-Pałasz , Grzegorz Węgrzyn

Abstract

Background: Until now, the direct link between central carbon metabolism and DNA replication has been demonstrated only in Bacillus. subtilis . Therefore, we asked if this is a specific phenomenon, characteristic for this bacterium and perhaps for its close relatives, or a more general biological rule. Results: We found that temperature-sensitivity of mutants in particular genes coding for replication proteins could be suppressed by deletions of certain genes coding for enzymes of the central carbon metabolism. Namely, the effects of dnaA46 (ts) mutation could be suppressed by dysfunction of pta or ackA , effects of dnaB (ts) by dysfunction of pgi or pta , effects of dnaE486 (ts) by dysfunction of tktB , effects of dnaG (ts) by dysfunction of gpmA, pta or ackA , and effects of dnaN159 (ts) by dysfunction of pta or ackA . The observed suppression effects were not caused by a decrease in bacterial growth rate. Conclusions: The genetic correlation exists between central carbon metabolism and DNA replication in the model Gram-negative bacterium, E. coli . This link exists at the steps of initiation and elongation of DNA replication, indicating the important global correlation between metabolic status of the cell and the events leading to cell reproduction.
Author Monika Maciąg (FB / DMGB)
Monika Maciąg,,
- Department of Molecular Genetics of Bacteria
, Dariusz Nowicki (FB / DMGB)
Dariusz Nowicki,,
- Department of Molecular Genetics of Bacteria
, Laurent Janniere
Laurent Janniere,,
-
, Agnieszka Szalewska-Pałasz (FB / DMGB)
Agnieszka Szalewska-Pałasz,,
- Department of Molecular Genetics of Bacteria
, Grzegorz Węgrzyn (FB / DMoB)
Grzegorz Węgrzyn,,
- Department of Molecular Biology
Journal seriesMicrobial Cell Factories, ISSN , e-ISSN 1475-2859, (A 35 pkt)
Issue year2011
Vol10
Pages1-11
Publication size in sheets0.5
Keywords in EnglishDNA replication, central carbon metabolism
DOIDOI:10.1186/1475-2859-10-19
URL http://www.microbialcellfactories.com/content/pdf/1475-2859-10-19.pdf
Languageen angielski
Score (nominal)40
Publication indicators WoS Impact Factor: 2011 = 3.552 (2) - 2011=4.0 (5)
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