Replication and segregation of an Escherichia coli chromosome with two replication origins.
Characterized bacteria, unlike eukaryotes and some archaea, initiate replication bidirectionally from a single replication origin contained within a circular or linear chromosome. We constructed Escherichia coli cells with two WT origins separated by 1 Mb in their 4.64-Mb chromosome. Productive bidi...
| Váldodahkkit: | , , , , |
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| Materiálatiipa: | Journal article |
| Giella: | English |
| Almmustuhtton: |
2011
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| _version_ | 1826288858876084224 |
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| author | Wang, X Lesterlin, C Reyes-Lamothe, R Ball, G Sherratt, D |
| author_facet | Wang, X Lesterlin, C Reyes-Lamothe, R Ball, G Sherratt, D |
| author_sort | Wang, X |
| collection | OXFORD |
| description | Characterized bacteria, unlike eukaryotes and some archaea, initiate replication bidirectionally from a single replication origin contained within a circular or linear chromosome. We constructed Escherichia coli cells with two WT origins separated by 1 Mb in their 4.64-Mb chromosome. Productive bidirectional replication initiated synchronously at both spatially separate origins. Newly replicated DNA from both origins was segregated sequentially as replication progressed, with two temporally and spatially separate replication termination events. Replication initiation occurred at a cell volume identical to that of cells with a single WT origin, showing that initiation control is independent of cellular and chromosomal oriC concentration. Cells containing just the ectopic origin initiated bidirectional replication at the expected cell mass and at the normal cellular location of that region. In all strains, spatial separation of sister loci adjacent to active origins occurred shortly after their replication, independently of whether replication initiated at the normal origin, the ectopic origin, or both origins. |
| first_indexed | 2024-03-07T02:20:05Z |
| format | Journal article |
| id | oxford-uuid:a399d04c-1b16-4aae-941a-575b2cbf5e1f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:20:05Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:a399d04c-1b16-4aae-941a-575b2cbf5e1f2022-03-27T02:28:13ZReplication and segregation of an Escherichia coli chromosome with two replication origins.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a399d04c-1b16-4aae-941a-575b2cbf5e1fEnglishSymplectic Elements at Oxford2011Wang, XLesterlin, CReyes-Lamothe, RBall, GSherratt, DCharacterized bacteria, unlike eukaryotes and some archaea, initiate replication bidirectionally from a single replication origin contained within a circular or linear chromosome. We constructed Escherichia coli cells with two WT origins separated by 1 Mb in their 4.64-Mb chromosome. Productive bidirectional replication initiated synchronously at both spatially separate origins. Newly replicated DNA from both origins was segregated sequentially as replication progressed, with two temporally and spatially separate replication termination events. Replication initiation occurred at a cell volume identical to that of cells with a single WT origin, showing that initiation control is independent of cellular and chromosomal oriC concentration. Cells containing just the ectopic origin initiated bidirectional replication at the expected cell mass and at the normal cellular location of that region. In all strains, spatial separation of sister loci adjacent to active origins occurred shortly after their replication, independently of whether replication initiated at the normal origin, the ectopic origin, or both origins. |
| spellingShingle | Wang, X Lesterlin, C Reyes-Lamothe, R Ball, G Sherratt, D Replication and segregation of an Escherichia coli chromosome with two replication origins. |
| title | Replication and segregation of an Escherichia coli chromosome with two replication origins. |
| title_full | Replication and segregation of an Escherichia coli chromosome with two replication origins. |
| title_fullStr | Replication and segregation of an Escherichia coli chromosome with two replication origins. |
| title_full_unstemmed | Replication and segregation of an Escherichia coli chromosome with two replication origins. |
| title_short | Replication and segregation of an Escherichia coli chromosome with two replication origins. |
| title_sort | replication and segregation of an escherichia coli chromosome with two replication origins |
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