E2F-associated chromatin modifiers and cell cycle control.

The E2F family of proteins was identified on the basis of its role in promoting the G0 to S phase transition. Research over the past several years has unveiled considerable complexity within the family, with numerous studies pointing to delegation of function for distinct family members. More recent studies highlighted in this review have expanded this picture, suggesting ways in which E2F target gene expression is refined during cell cycle progression by facilitating the acquisition of promoter-specific histone modifications. E2F associated co-activators promote activating histone marks while recruitment of co-repressors associated with E2Fs and the pRB family leads to accretion of inhibitory histone modifications that provoke chromatin compaction.