USP7 and VCPFAF1 define the SUMO/Ubiquitin landscape at the DNA replication fork | Zendy

André Franz | Zendy; Pablo Valledor | Zendy; Patricia UbietoCapella | Zendy; Domenic Pilger | Zendy; Antonio Galarreta | Zendy; Vanesa Lafarga | Zendy; Alejandro Fernández-Llorente | Zendy; Guillermo de la Vega-Barranco | Zendy; Fabian den Brave | Zendy; Thorsten Hoppe | Zendy; Óscar Fernández-Capetillo | Zendy; Emilio Lecona | Zendy

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USP7 and VCPFAF1 define the SUMO/Ubiquitin landscape at the DNA replication fork

Author(s) -

André Franz,

Pablo Valledor,

Patricia UbietoCapella,

Domenic Pilger,

Antonio Galarreta,

Vanesa Lafarga,

Alejandro Fernández-Llorente,

Guillermo de la Vega-Barranco,

Fabian den Brave,

Thorsten Hoppe,

Óscar Fernández-Capetillo,

Emilio Lecona

Publication year - 2021

Publication title -

cell reports

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 6.264

H-Index - 154

eISSN - 2639-1856

pISSN - 2211-1247

DOI - 10.1016/j.celrep.2021.109819

Subject(s) - ubiquitin , chromatin , biology , dna replication , origin recognition complex , microbiology and biotechnology , eukaryotic dna replication , dna , control of chromosome duplication , dna replication factor cdt1 , replication factor c , deubiquitinating enzyme , dna damage , pre replication complex , genetics , gene

Summary The AAA + ATPase VCP regulates the extraction of SUMO and ubiquitin-modified DNA replication factors from chromatin. We have previously described that active DNA synthesis is associated with a SUMO-high/ubiquitin-low environment governed by the deubiquitylase USP7. Here, we unveil a functional cooperation between USP7 and VCP in DNA replication, which is conserved from Caenorhabditis elegans to mammals. The role of VCP in chromatin is defined by its cofactor FAF1, which facilitates the extraction of SUMOylated and ubiquitylated proteins that accumulate after the block of DNA replication in the absence of USP7. The inactivation of USP7 and FAF1 is synthetically lethal both in C. elegans and mammalian cells. In addition, USP7 and VCP inhibitors display synergistic toxicity supporting a functional link between deubiquitylation and extraction of chromatin-bound proteins. Our results suggest that USP7 and VCP FAF1 facilitate DNA replication by controlling the balance of SUMO/Ubiquitin-modified DNA replication factors on chromatin.

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