Surprising New Role For Proteins In Sister Chromatid Cohesion

Sister **chromatid** cohesion (the binding together of the two identical copies of each chromosome that are formed during replication) helps to ensure that chromosomes are accurately segregated during the anaphase of the **cell cycle**. Sister chromatid cohesion is mediated by a multi-subunit protein complex called **cohesin**. Inside the cell nucleus, cohesin localizes to centromeres (the point of attachment of sister chromatids) as well as heterochromatin (condensed and genetically inactive regions of DNA)... Whole article on "Sciencedaily":[ http://www.sciencedaily.com/releases/2007/08/070831171603.htm]

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