Category Archives: homologous recombination

ATR and H2AX

Last month (December 2008)  in the Journal of Biological Chemistry, Rebecca Chanoux and colleagues reported the results of their studies on ATR and H2AX. They wrote: “If ATR prevents the collapse of stalled replication forks into DSBs, and H2AX facilitates … Continue reading

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Filed under ATR, biochemistry, DNA, DNA damage, DNA repair, double strand break, genetics, genome stability, H2A.X, homologous recombination, recombination

human exonuclease 1 and BLM helicase

In a recent paper by Amitabh Nimonkar and colleagues, it was established that human BLM helicase, a member of the RecQ family, stimulates human exonuclease 1 (hExo1), a 5′ – 3′ double-stranded DNA exonuclease … “Stimulation of DNA resection by … Continue reading

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Filed under biochemistry, biology, DNA, DNA repair, double strand break, exonuclease, genetics, helicase, homologous recombination, molecular biology

WRN mini-review

In a recent issue of DNA Repair [7 (2008) 1776–1786], Julia Sidorova reviews the role of WRN in preserving DNA integrity during replication and propose that WRN can function in coordinating replication fork progression with replication stress-induced fork remodeling. She … Continue reading

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Filed under ageing, aging, biological sciences, biology, DNA, DNA repair, double strand break, exonuclease, genetics, helicase, homologous recombination, lifespan, longevity, molecular biology, nucleus, science, Werner Syndrome, Werners Syndrome, WRN

rDNA and recombination

In a mini-review by Ellen Tsang and Anthony Carr, recombination is highly regulated in the rDNA. Repetitive sequences such as rDNA provide good substrates for homologous recombination, particualrly if replication forks collapse here. Several studies have shown that replication fork … Continue reading

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Filed under ageing, aging, biology, DNA, DNA repair, double strand break, gene, genetics, homologous recombination, molecular biology, recombination, replication, s. cerevisiae, saccharomyces cerevisiae, science, sirtuin, yeast