Replication Fork Stalling at Natural Impediments
نویسندگان
چکیده
منابع مشابه
Replication fork stalling at natural impediments.
Accurate and complete replication of the genome in every cell division is a prerequisite of genomic stability. Thus, both prokaryotic and eukaryotic replication forks are extremely precise and robust molecular machines that have evolved to be up to the task. However, it has recently become clear that the replication fork is more of a hurdler than a runner: it must overcome various obstacles pre...
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Mating-type switching in fission yeast has long been known to be directed by a DNA 'imprint'. This imprint has now been firmly characterized as a protected site-specific and strand-specific nick. New work also links the widely conserved Swi1-Swi3 complex to the protection of stalled replication forks in general.
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We report an efficient, controllable, site-specific replication roadblock that blocks cell proliferation, but which can be rapidly and efficiently reversed, leading to recovery of viability. Escherichia coli replication forks of both polarities stalled in vivo within the first 500 bp of a 10 kb repressor-bound array of operator DNA-binding sites. Controlled release of repressor binding led to r...
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The integrity of the genome is threatened by DNA damage that blocks the progression of replication forks. Little is known about the genomic locations of replication fork stalling, and its determinants and consequences in vivo. Here we show that bulky DNA damaging agents induce localized fork stalling at yeast replication origins, and that localized stalling is dependent on proximal origin activ...
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DNA inverted repeats (IRs) are hotspots of genomic instability in both prokaryotes and eukaryotes. This feature is commonly attributed to their ability to fold into hairpin- or cruciform-like DNA structures interfering with DNA replication and other genetic processes. However, direct evidence that IRs are replication stall sites in vivo is currently lacking. Here, we show by 2D electrophoretic ...
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ژورنال
عنوان ژورنال: Microbiology and Molecular Biology Reviews
سال: 2007
ISSN: 1092-2172,1098-5557
DOI: 10.1128/mmbr.00030-06