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Access to the article is free, however registration and sign-in are required. When a cell replicates its DNA during S phase of the cell cycle, the sister chromatid pairs must stick together like glue until they are separated to opposite ends of the cell (and hence into separate daughter cells) at anaphase. How the cell achieves this is still unclear but, as Takahashi and Yanagida explain in their Perspective, new findings in yeast have identified one molecule, Trf4p, that may be involved both in DNA replication and sister chromatid cohesion (Wang et al.).
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