PMID:16391237: Difference between revisions

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<span style = 'font-size: large'> '''Kruse, T, Blagoev, B, Løbner-Olesen, A, Wachi, M, Sasaki, K, Iwai, N, Mann, M and Gerdes, K'''  (2006) Actin homolog MreB and RNA polymerase interact and are both required for chromosome segregation in Escherichia coli.''Genes Dev.'' '''20''':113-24</span>
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|{{TableHeadingColor}} |'''Abstract''' || The actin-like MreB cytoskeletal protein and RNA polymerase (RNAP) have both been suggested to provide the force for chromosome segregation. Here, we identify MreB and RNAP as in vivo interaction partners. The interaction was confirmed using in vitro purified components. We also present convincing evidence that MreB and RNAP are both required for chromosome segregation in Escherichia coli. MreB is required for origin and bulk DNA segregation, whereas RNAP is required for bulk DNA, terminus, and possibly also for origin segregation. Furthermore, flow cytometric analyses show that MreB depletion and inactivation of RNAP confer virtually identical and highly unusual chromosome segregation defects. Thus, our results raise the possibility that the MreB-RNAP interaction is functionally important for chromosome segregation.
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'''Kruse, T, Blagoev, B, Løbner-Olesen, A, Wachi, M, Sasaki, K, Iwai, N, Mann, M and Gerdes, K'''  (2006) Actin homolog MreB and RNA polymerase interact and are both required for chromosome segregation in Escherichia coli. ''Genes Dev.'' '''20''':113-24
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The actin-like MreB cytoskeletal protein and RNA polymerase (RNAP) have both been suggested to provide the force for chromosome segregation. Here, we identify MreB and RNAP as in vivo interaction partners. The interaction was confirmed using in vitro purified components. We also present convincing evidence that MreB and RNAP are both required for chromosome segregation in Escherichia coli. MreB is required for origin and bulk DNA segregation, whereas RNAP is required for bulk DNA, terminus, and possibly also for origin segregation. Furthermore, flow cytometric analyses show that MreB depletion and inactivation of RNAP confer virtually identical and highly unusual chromosome segregation defects. Thus, our results raise the possibility that the MreB-RNAP interaction is functionally important for chromosome segregation.
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[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16391237 PubMed] [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1356105 PMC1356105]
Online version:[http://dx.doi.org/10.1101/gad.366606 10.1101/gad.366606]
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|{{TableHeadingColor}} nowrap |'''Links''' ||  [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16391237 PubMed]
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Actins/genetics; Chromosome Segregation; DNA-Directed RNA Polymerases/genetics; DNA-Directed RNA Polymerases/metabolism; Escherichia coli/genetics; Escherichia coli/metabolism; Escherichia coli Proteins/antagonists & inhibitors; Escherichia coli Proteins/genetics; Escherichia coli Proteins/metabolism; Protein Binding; Replication Origin
 
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Latest revision as of 04:29, 15 September 2013

Citation

Kruse, T, Blagoev, B, Løbner-Olesen, A, Wachi, M, Sasaki, K, Iwai, N, Mann, M and Gerdes, K (2006) Actin homolog MreB and RNA polymerase interact and are both required for chromosome segregation in Escherichia coli. Genes Dev. 20:113-24

Abstract

The actin-like MreB cytoskeletal protein and RNA polymerase (RNAP) have both been suggested to provide the force for chromosome segregation. Here, we identify MreB and RNAP as in vivo interaction partners. The interaction was confirmed using in vitro purified components. We also present convincing evidence that MreB and RNAP are both required for chromosome segregation in Escherichia coli. MreB is required for origin and bulk DNA segregation, whereas RNAP is required for bulk DNA, terminus, and possibly also for origin segregation. Furthermore, flow cytometric analyses show that MreB depletion and inactivation of RNAP confer virtually identical and highly unusual chromosome segregation defects. Thus, our results raise the possibility that the MreB-RNAP interaction is functionally important for chromosome segregation.

Links

PubMed PMC1356105 Online version:10.1101/gad.366606

Keywords

Actins/genetics; Chromosome Segregation; DNA-Directed RNA Polymerases/genetics; DNA-Directed RNA Polymerases/metabolism; Escherichia coli/genetics; Escherichia coli/metabolism; Escherichia coli Proteins/antagonists & inhibitors; Escherichia coli Proteins/genetics; Escherichia coli Proteins/metabolism; Protein Binding; Replication Origin

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