Cryo-EM structure of a licensed DNA replication origin

Origins of replication are licensed by loading of MCM onto DNA, and origin firing depends on interaction with Cdc45 and GINS to form two CMG holo-helicases. Here, authors determine the cryo-EM structures of DNA-bound MCM and visualise a phospho-dependent MCM element important for Cdc45 recruitment.

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Detalles Bibliográficos
Autores principales: Ferdos Abid Ali, Max E. Douglas, Julia Locke, Valerie E. Pye, Andrea Nans, John F. X. Diffley, Alessandro Costa
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/fb70ba000f734f91b445107c7b777e95
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Sumario:Origins of replication are licensed by loading of MCM onto DNA, and origin firing depends on interaction with Cdc45 and GINS to form two CMG holo-helicases. Here, authors determine the cryo-EM structures of DNA-bound MCM and visualise a phospho-dependent MCM element important for Cdc45 recruitment.