Tag - DNA replication

New paper on DDK structure, control and selective activation of the MCM2-7 helicase

Saleh, A., Noguchi, Y., Aramayo, R., Ivanova, M. E., Stevens, K. M., Montoya, A., Sunidhi, S., Carranza, N. L., Skwark, M. J., Speck, C. (2022). The structural basis of Cdc7-Dbf4 kinase dependent targeting and phosphorylation of the MCM2-7 double hexamer. Nature Communication 13:2915. Abstract | Full Text |

New paper on the molecular mechanism in the licensing of eukaryotic replication origins

Feng, X., Noguchi, Y., Barbon, M., Stillman, B., Speck, C., Li, H. (2021). The structure of ORC-Cdc6 on an origin DNA reveals the mechanism of ORC activation by the replication initiator Cdc6. Nature Communications 12:3883. Abstract | Full Text |

New paper on evolution of DNA replication origin and gene silencing

Hu, Y., Tareen, A., Sheu, Y. J., Ireland, W.T ., Speck, C., Li, H., Joshua-Tor, L., Kinney, J. B., Stillman, B. (2020). Evolution of DNA replication origin specification and gene silencing mechanisms. Nature Communications 11:5175. Abstract | Full Text |

New paper on the structural mechanism of helicase loading

Yuan, Z., Schneider, S., Dodd, T., Riera, A., Bai, L., Yan, C., Magdalou, I., Ivanov, I., Stillman, B., Li, H., Speck, C. (2020). Structural mechanism of helicase loading onto replication origin DNA by ORC-Cdc6. Proceedings of the National Academy of Sciences of the United States of America 117, 17747-17756. Abstract | Full Text |

New paper proposes lagging-strand DNA extrusion mechanism

Noguchi, Y., Yuan, Z., Bai, L., Schneider, S., Zhao, G., Stillman, B., Speck, C., Li, H. (2017). Cryo-EM structure of Mcm2-7 double hexamer on DNA suggests a lagging-strand DNA extrusion model. Proceedings of the National Academy of Sciences of the United States of America 114, E9529-E9538. Abstract | Full text |

New paper shows Cdc6 ATPase activity promotes DNA replication

Chang, F., Riera, A., Evrin, C., Sun, J., Li, H., Speck, C., Weinreich, M. (2015). Cdc6 ATPase activity disengages Cdc6 from the pre-replicative complex to promote DNA replication. eLife 4, e05759.
Abstract | Full text | Biomedical Picture of the Day | MRC Clinical Sciences Centre News | Imperial College London News |

New paper on regulation of loading of MCM2-7 onto DNA

Samel, S. A., Fernández-Cid, A., Sun, J., Riera, A., Tognetti, S., Herrera, C., Li, H., Speck, C. (2014). A unique DNA entry gate serves for regulated loading of the eukaryotic replicative helicase MCM2–7 onto DNA. Genes & Development 28, 1653-1666.
Abstract | Imperial College London News |