Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Genome-wide ParB2-DNA and RctB-DNA interaction analyses in Vibrio cholerae


ABSTRACT: Replication and segregation are the two main processes that maintain chromosomes in growing cells. In bacteria, replication and transcription have been proposed to provide motive force in chromosome segregation. Recently, ParB2, a segregation protein, encoded by V. cholerae chromosome II (chrII) was also found to influence chrII replication. V. cholerae chrII replication is primarily controlled by its specific initiator protein, RctB. Here, we have screened for ParB2 and RctB binding sites using a genome-wide DNA binding analysis (ChIP-chip). We report the identification of a new region containing additional RctB and ParB2 binding sites, and suggest the mechanisms to coordinate replication initiation with segregation of chromosomes. ParB2 binding DNA (Cy5) vs total DNA (input, Cy3) in wildtype (CVC209), RctB binding DNA (Cy5) vs total DNA (input, Cy3) in wildtype (CVC209), RctB binding DNA (Cy5) vs total DNA (input, Cy3) in MCH1 (CVC2099, rctB-deleted strain), Biological replicates: 3 or 2

ORGANISM(S): Vibrio cholerae O1 biovar El Tor str. N16961

SUBMITTER: Jonghwan Baek 

PROVIDER: E-GEOD-72978 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Chromosome I controls chromosome II replication in Vibrio cholerae.

Baek Jong Hwan JH   Chattoraj Dhruba K DK  

PLoS genetics 20140227 2


Control of chromosome replication involves a common set of regulators in eukaryotes, whereas bacteria with divided genomes use chromosome-specific regulators. How bacterial chromosomes might communicate for replication is not known. In Vibrio cholerae, which has two chromosomes (chrI and chrII), replication initiation is controlled by DnaA in chrI and by RctB in chrII. DnaA has binding sites at the chrI origin of replication as well as outside the origin. RctB likewise binds at the chrII origin  ...[more]

Publication: 1/2

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