Identification of Elg1 interaction partners and effects on post-replication chromatin re-formation

Vamsi K. Gali, David Dickerson, Yuki Katou, Katsunori Fujiki, Katsuhiko Shirahige, Tom Owen-Hughes, Takashi Kubota, Anne D. Donaldson (Lead / Corresponding author)

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)
    161 Downloads (Pure)

    Abstract

    Elg1, the major subunit of a Replication Factor C-like complex, is critical to ensure genomic stability during DNA replication, and is implicated in controlling chromatin structure. We investigated the consequences of Elg1 loss for the dynamics of chromatin re-formation following DNA replication. Measurement of Okazaki fragment length and the micrococcal nuclease sensitivity of newly replicated DNA revealed a defect in nucleosome organization in the absence of Elg1. Using a proteomic approach to identify Elg1 binding partners, we discovered that Elg1 interacts with Rtt106, a histone chaperone implicated in replication-coupled nucleosome assembly that also regulates transcription. A central role for Elg1 is the unloading of PCNA from chromatin following DNA replication, so we examined the relative importance of Rtt106 and PCNA unloading for chromatin reassembly following DNA replication. We find that the major cause of the chromatin organization defects of an ELG1 mutant is PCNA retention on DNA following replication, with Rtt106-Elg1 interaction potentially playing a contributory role.

    Original languageEnglish
    Article numbere1007783
    Pages (from-to)1-20
    Number of pages20
    JournalPLoS Genetics
    Volume14
    Issue number11
    Early online date12 Nov 2018
    DOIs
    Publication statusPublished - Nov 2018

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Molecular Biology
    • Genetics
    • Genetics(clinical)
    • Cancer Research

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