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Mapping of active replication origins in vivo in thaum- and euryarchaeal replicons
Stockholm University, Faculty of Science, Department of Molecular Biosciences, The Wenner-Gren Institute.
Stockholm University, Faculty of Science, Department of Molecular Biosciences, The Wenner-Gren Institute.
2013 (English)In: Molecular Microbiology, ISSN 0950-382X, E-ISSN 1365-2958, Vol. 90, no 3, 538-550 p.Article in journal (Refereed) Published
Abstract [en]

We report mapping of active replication origins in thaum- and euryarchaeal replicons using high-throughput sequencing-based marker frequency analysis. The chromosome of the thaumarchaeon Nitrosopumilus maritimus is shown to contain a single origin of replication, whereas the main chromosome in the halophilic euryarchaea Haloferax mediterranei and Haloferax volcanii each contains two origins. All replication origins specified bidirectional replication, and the two origins in the halophiles were initiated in synchrony. The pHM500 plasmid of H.mediterranei is shown to contain a single origin, and the copy numbers of five plasmid replicons in the two halophiles were inferred to be close to that of the main chromosome. Origin recognition boxes (ORBs) that provide binding sites for Orc1/Cdc6 replication initiator proteins are identified at all chromosomal origins, as well as in a range of additional thaumarchaeal species. An annotation update is provided for all three species.

Place, publisher, year, edition, pages
2013. Vol. 90, no 3, 538-550 p.
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:su:diva-100878DOI: 10.1111/mmi.12382ISI: 000330107400006OAI: oai:DiVA.org:su-100878DiVA: diva2:697282
Note

AuthorCount:4;

Available from: 2014-02-17 Created: 2014-02-17 Last updated: 2017-12-06Bibliographically approved

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