Nikolaos Parisis, Pablo D Dans, Muhammad Jbara, Balveer Singh, Diane Schausi-Tiffoche, Diego Molina-Serrano, Isabelle Brun-Heath, Denisa Hendrychová, Suman Kumar Maity, Diana Buitrago, Rafael Lema, Thiziri Nait Achour, Simona Giunta, Michael Girardot, Nicolas Talarek, Valérie Rofidal, Katerina Danezi, Damien Coudreuse, Marie-Noëlle Prioleau, Robert Feil, Modesto Orozco, Ashraf Brik, Pei-Yun Jenny Wu, Liliana Krasinska, Daniel Fisher
Histone post-translational modifications promote a chromatin environment that controls transcription, DNA replication and repair, but surprisingly few phosphorylations have been documented. We report the discovery of histone H3 serine-57 phosphorylation (H3S57ph) and show that it is implicated in different DNA repair pathways from fungi to vertebrates. We identified CHK1 as a major human H3S57 kinase, and disrupting or constitutively mimicking H3S57ph had opposing effects on rate of recovery from replication stress, 53BP1 chromatin binding, and dependency on RAD52...
August 22, 2023: Nature Communications