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 (Corresponding Author)

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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
JournalPLoS Genetics
Volume14
Issue number11
Early online date12 Nov 2018
DOIs
Publication statusPublished - 12 Nov 2018

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DNA replication
DNA Replication
Chromatin
chromatin
Proliferating Cell Nuclear Antigen
DNA
nucleosomes
Nucleosomes
unloading
Histone Chaperones
Replication Protein C
defect
micrococcal nuclease
Micrococcal Nuclease
Genomic Instability
proteomics
histones
Proteomics
transcription (genetics)
effect

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Identification of Elg1 interaction partners and effects on post-replication chromatin re-formation. / Gali, Vamsi K.; Dickerson, David; Katou, Yuki; Fujiki, Katsunori; Shirahige, Katsuhiko; Owen-Hughes, Tom; Kubota, Takashi; Donaldson, Anne D. (Corresponding Author).

In: PLoS Genetics, Vol. 14, No. 11, e1007783, 12.11.2018.

Research output: Contribution to journalArticle

Gali, Vamsi K. ; Dickerson, David ; Katou, Yuki ; Fujiki, Katsunori ; Shirahige, Katsuhiko ; Owen-Hughes, Tom ; Kubota, Takashi ; Donaldson, Anne D. / Identification of Elg1 interaction partners and effects on post-replication chromatin re-formation. In: PLoS Genetics. 2018 ; Vol. 14, No. 11.
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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 interactionpotentially playing a contributory role.",
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