Structural insights into Cdc45 function: was there a nuclease at the heart of the ancestral replisome?

The role of Cdc45 in genomic duplication has remained unclear since its initial identification as an essential replication factor. Recent structural studies of Cdc45 and the evolutionarily-related archaeal GAN and bacterial RecJ nucleases have provided fresh insight into its function as co-activator...

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Detalles Bibliográficos
Autor principal: Pellegrini, Luca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Science B.V 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5484177/
https://www.ncbi.nlm.nih.gov/pubmed/27919598
http://dx.doi.org/10.1016/j.bpc.2016.11.011
Descripción
Sumario:The role of Cdc45 in genomic duplication has remained unclear since its initial identification as an essential replication factor. Recent structural studies of Cdc45 and the evolutionarily-related archaeal GAN and bacterial RecJ nucleases have provided fresh insight into its function as co-activator of the MCM helicase. The CMG helicase of the last archaeal/eukaryotic ancestor might have harboured a single-stranded DNA nuclease activity, conserved in some modern archaea.

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