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During the gap between G1 and S phases when replication origins are licensed and fired, it is possible that DNA translocases could disrupt pre-replicative complexes (pre-RCs). In this issue of Molecular Cell, Gros et al. (2015) find that pre-RCs can be pushed along DNA and retain the ability to support replication.
Very few specific functions have been assigned to ultraconserved regions. In this issue of Molecular Cell, Liz et al. (2014) describe how a lncRNA transcribed from an ultraconserved region can negatively regulate miRNA maturation.
RNAs transcribed from enhancers (eRNAs) have been linked to enhancer function. In this issue of Molecular Cell, Schaukowitch et al. (2014) show that upon activation, eRNAs can bind NELF and are necessary for its transient removal from promoters to release paused RNA polymerase II and drive expression of immediate-early genes in neurons.