Abstract: |
DNA replication must occur precisely once per cell cycle to maintain a stable genome. An important means to achieve this is through multilayered regulation of replication initiation at both local and global levels. Recent genetic and biochemical studies in several organisms have revealed critical roles of posttranslational modifications (PTMs) in these regulations. While the best-demonstrated class of PTMs is kinase-mediated phosphorylation, additional forms of PTMs including ubiquitylation, methylation, and acetylation also contribute to the control of replication initiation. Here we survey the current understanding of how different types of modifications govern and fine-tune several aspects of replication initiation, including origin licensing, firing, and global replication timing. © 2016 Springer International Publishing Switzerland. |