Transcription profiling of Escherichia coli overexpressing dpiA vs wt

ABSTRACT: The dpiA and dpiB genes of Escherichia coli, which are orthologs of genes that regulate citrate uptake and utilization in Klebsiella pneumoniae, comprise a two-component signal transduction system that can modulate the replication of and destabilize the inheritance of pSC101 and certain other plasmids. Here we show that perturbed replication and inheritance result from binding of the effector protein DpiA to A+T-rich replication origin sequences that resemble those in the K. pneumoniae promoter region targeted by the DpiA ortholog, CitB. Consistent with its ability to bind to A+T-rich origin sequences, overproduction of DpiA induced the SOS response in E. coli, suggesting that chromosomal DNA replication is affected. Bacteria that overexpressed DpiA showed an increased amount of DNA per ce

ORGANISM(S): Escherichia coli

SUBMITTER: Janos Demeter 

PROVIDER: E-SMDB-3557 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress