Abstract：
:DNA methylation is an essential epigenetic mark in mammals that has to be re-established after each round of DNA replication. The protein UHRF1 is essential for this process; it has been proposed that the protein targets newly replicated DNA by cooperatively binding hemi-methylated DNA and H3K9me2/3, but this model leaves a number of questions unanswered. Here, we present evidence for a direct recruitment of UHRF1 by the replication machinery via DNA ligase 1 (LIG1). A histone H3K9-like mimic within LIG1 is methylated by G9a and GLP and, compared with H3K9me2/3, more avidly binds UHRF1. Interaction with methylated LIG1 promotes the recruitment of UHRF1 to DNA replication sites and is required for DNA methylation maintenance. These results further elucidate the function of UHRF1, identify a non-histone target of G9a and GLP, and provide an example of a histone mimic that coordinates DNA replication and DNA methylation maintenance.
journal_name
Mol Celljournal_title
Molecular cellauthors
Ferry L,Fournier A,Tsusaka T,Adelmant G,Shimazu T,Matano S,Kirsh O,Amouroux R,Dohmae N,Suzuki T,Filion GJ,Deng W,de Dieuleveult M,Fritsch L,Kudithipudi S,Jeltsch A,Leonhardt H,Hajkova P,Marto JA,Arita K,Shinkai Ydoi
10.1016/j.molcel.2017.07.012subject
Has Abstractpub_date
2017-08-17 00:00:00pages
550-565.e5issue
4eissn
1097-2765issn
1097-4164pii
S1097-2765(17)30506-3journal_volume
67pub_type
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