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- W2115383745 endingPage "1919" @default.
- W2115383745 startingPage "1905" @default.
- W2115383745 abstract "Eukaryotic cells regulate the progression and integrity of DNA replication forks to maintain genomic stability and couple DNA synthesis to other processes. The budding yeast proteins Mrc1 and Tof1 associate with the putative MCM–Cdc45 helicase and limit progression of the replisome when nucleotides are depleted, and the checkpoint kinases Mec1 and Rad53 stabilize such stalled forks and prevent disassembly of the replisome. Forks also pause transiently during unperturbed chromosome replication, at sites where nonnucleosomal proteins bind DNA tightly. We describe a method for inducing prolonged pausing of forks at protein barriers assembled at unique sites on a yeast chromosome, allowing us to examine for the first time the effects of pausing upon replisome integrity. We show that paused forks maintain an intact replisome that contains Mrc1, Tof1, MCM–Cdc45, GINS, and DNA polymerases α and ϵ and that recruits the Rrm3 helicase. Surprisingly, pausing does not require Mrc1, although Tof1 and Csm3 are both important. In addition, the integrity of the paused forks does not require Mec1, Rad53, or recombination. We also show that paused forks at analogous barriers in the rDNA are regulated similarly. These data indicate that paused and stalled eukaryotic replisomes resemble each other but are regulated differently." @default.
- W2115383745 created "2016-06-24" @default.
- W2115383745 creator A5020161951 @default.
- W2115383745 creator A5058529935 @default.
- W2115383745 creator A5059339830 @default.
- W2115383745 creator A5073735040 @default.
- W2115383745 creator A5088998424 @default.
- W2115383745 date "2005-08-15" @default.
- W2115383745 modified "2023-10-14" @default.
- W2115383745 title "Molecular anatomy and regulation of a stable replisome at a paused eukaryotic DNA replication fork" @default.
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- W2115383745 doi "https://doi.org/10.1101/gad.337205" @default.
- W2115383745 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1186190" @default.
- W2115383745 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16103218" @default.
- W2115383745 hasPublicationYear "2005" @default.