Persistent DNA double-strand breaks and telomeres represent genomic hazards, as they can instigate inappropriate repair reactions. Two recent papers by Oza and colleagues (pp. 912-917) and Schober and colleagues (pp. 928-938) show that both types of DNA ends are sequestered from bulk DNA by Mps3, a SUN domain protein that spans the inner nuclear membrane. Anchorage maintains telomere integrity and steers double-strand breaks toward specialized repair pathways. This work defines the nuclear periphery as a subcompartment where dangerous DNA elements can be handled with care.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2763515 | PMC |
http://dx.doi.org/10.1101/gad.1805309 | DOI Listing |
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