منابع مشابه
Running into problems: how cells cope with replicating damaged DNA.
The ability of cells to fully and faithfully replicate DNA is essential for preventing genomic instability and cancer. DNA is susceptible to damage both in resting and in actively replicating cells. Thus, genome duplication necessarily involves replication of damaged DNA. The many mechanism cells use to avoid or overcome the problems of replicating an imperfect DNA template are discussed.
متن کاملRighting the Wrongs: Structural Insights into Replicating Damaged DNA
There is compelling evidence that proliferating cell nuclear antigen (PCNA), a DNA sliding clamp, co-ordinates the processing and joining of Okazaki fragments during eukaryotic DNA replication. However, a detailed mechanistic understanding of functional PCNA:ligase I interactions has been incomplete. Here we present the co-crystal structure of yeast PCNA with a peptide encompassing the conserve...
متن کاملReplication fork slowing and stalling are distinct, checkpoint-independent consequences of replicating damaged DNA
In response to DNA damage during S phase, cells slow DNA replication. This slowing is orchestrated by the intra-S checkpoint and involves inhibition of origin firing and reduction of replication fork speed. Slowing of replication allows for tolerance of DNA damage and suppresses genomic instability. Although the mechanisms of origin inhibition by the intra-S checkpoint are understood, major que...
متن کاملReplicating animal mitochondrial DNA
The field of mitochondrial DNA (mtDNA) replication has been experiencing incredible progress in recent years, and yet little is certain about the mechanism(s) used by animal cells to replicate this plasmid-like genome. The long-standing strand-displacement model of mammalian mtDNA replication (for which single-stranded DNA intermediates are a hallmark) has been intensively challenged by a new s...
متن کامل1 Mechanisms for Replicating DNA
In the most fundamental sense, the general mechanism of DNA replication was first suggested by Watson and Crick as an immediate and obvious consequence of the complementarity of the two strands of the DNA structure. Thus, all replication processes simply involve the melting apart of the two strands followed by the polymerization of each complementary strand on the resulting single-stranded temp...
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ژورنال
عنوان ژورنال: Cold Spring Harbor Perspectives in Biology
سال: 2013
ISSN: 1943-0264
DOI: 10.1101/cshperspect.a019836