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2009 ; 19
(24
): R1126-32
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Establishment of sister chromatid cohesion
#MMPMID20064425
Skibbens RV
Curr Biol
2009[Dec]; 19
(24
): R1126-32
PMID20064425
show ga
The process of sister chromatid pairing, or cohesion establishment, is coupled to
DNA replication and fundamental to proper chromosome segregation and cell
viability. In the past year, several articles have provided important new
insights into cohesion establishment, an activity predicated on the
acetyltransferase Ctf7/Eco1. Here, I review new findings that the conversion of
chromatid-bound cohesins into a cohesion-competent state involves
Ctf7/Eco1-mediated acetylation of the cohesin subunit Smc3. These studies further
explore an anti-establishment activity that involves the binding of accessory
factors WAPL/Rad61 and Pds5 to the cohesin subunit Scc3/Irr1. The
anti-establishment activity of WAPL/Rad61 and Pds5 is temporarily relaxed by
Ctf7/Eco1 during S phase to promote sister chromatid pairing. These findings are
likely to be of clinical relevance, given the role of cohesion pathways in a wide
range of disease states.