The SLX4 complex is a SUMO E3 ligase that impacts on replication stress outcome and genome stability

Jean Hugues Guervilly; Arato Takedachi; Valeria Naim; Sarah Scaglione; Charly Chawhan; Yoann Lovera; Emmanuelle Despras; Isao Kuraoka; Patricia Kannouche; Filippo Rosselli; Pierre Henri L. Gaillard

doi:10.1016/j.molcel.2014.11.014

The SLX4 complex is a SUMO E3 ligase that impacts on replication stress outcome and genome stability

Jean Hugues Guervilly, Arato Takedachi, Valeria Naim, Sarah Scaglione, Charly Chawhan, Yoann Lovera, Emmanuelle Despras, Isao Kuraoka, Patricia Kannouche, Filippo Rosselli, Pierre Henri L. Gaillard

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105 Citations (Scopus)

Résumé

The SLX4 Fanconi anemia protein is a tumor suppressor that may act as a key regulator that engages the cell into specific genome maintenance pathways. Here, we show that the SLX4 complex is a SUMO E3 ligase that SUMOylates SLX4 itself and the XPF subunit of the DNA repair/recombination XPF-ERCC1 endonuclease. This SLX4-dependent activity is mediated by a remarkably specific interaction between SLX4 and the SUMO-charged E2 conjugating enzyme UBC9 and relies not only on newly identified SUMO-interacting motifs (SIMs) in SLX4 but also on its BTB domain. In contrast to its ubiquitin-binding UBZ4 motifs, SLX4 SIMs are dispensable for its DNA interstrand crosslink repair functions. Instead, while detrimental in response to global replication stress, the SUMO E3 ligase activity of the SLX4 complex is critical to prevent mitotic catastrophe following common fragile site expression.

langue originale	Anglais
Pages (de - à)	123-137
Nombre de pages	15
journal	Molecular Cell
Volume	57
Numéro de publication	1
Les DOIs	https://doi.org/10.1016/j.molcel.2014.11.014
état	Publié - 8 janv. 2015

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10.1016/j.molcel.2014.11.014

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abstract = "The SLX4 Fanconi anemia protein is a tumor suppressor that may act as a key regulator that engages the cell into specific genome maintenance pathways. Here, we show that the SLX4 complex is a SUMO E3 ligase that SUMOylates SLX4 itself and the XPF subunit of the DNA repair/recombination XPF-ERCC1 endonuclease. This SLX4-dependent activity is mediated by a remarkably specific interaction between SLX4 and the SUMO-charged E2 conjugating enzyme UBC9 and relies not only on newly identified SUMO-interacting motifs (SIMs) in SLX4 but also on its BTB domain. In contrast to its ubiquitin-binding UBZ4 motifs, SLX4 SIMs are dispensable for its DNA interstrand crosslink repair functions. Instead, while detrimental in response to global replication stress, the SUMO E3 ligase activity of the SLX4 complex is critical to prevent mitotic catastrophe following common fragile site expression.",

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AU - Guervilly, Jean Hugues

AU - Takedachi, Arato

AU - Naim, Valeria

AU - Scaglione, Sarah

AU - Chawhan, Charly

AU - Lovera, Yoann

AU - Despras, Emmanuelle

AU - Kuraoka, Isao

AU - Kannouche, Patricia

AU - Rosselli, Filippo

AU - Gaillard, Pierre Henri L.

PY - 2015/1/8

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N2 - The SLX4 Fanconi anemia protein is a tumor suppressor that may act as a key regulator that engages the cell into specific genome maintenance pathways. Here, we show that the SLX4 complex is a SUMO E3 ligase that SUMOylates SLX4 itself and the XPF subunit of the DNA repair/recombination XPF-ERCC1 endonuclease. This SLX4-dependent activity is mediated by a remarkably specific interaction between SLX4 and the SUMO-charged E2 conjugating enzyme UBC9 and relies not only on newly identified SUMO-interacting motifs (SIMs) in SLX4 but also on its BTB domain. In contrast to its ubiquitin-binding UBZ4 motifs, SLX4 SIMs are dispensable for its DNA interstrand crosslink repair functions. Instead, while detrimental in response to global replication stress, the SUMO E3 ligase activity of the SLX4 complex is critical to prevent mitotic catastrophe following common fragile site expression.

AB - The SLX4 Fanconi anemia protein is a tumor suppressor that may act as a key regulator that engages the cell into specific genome maintenance pathways. Here, we show that the SLX4 complex is a SUMO E3 ligase that SUMOylates SLX4 itself and the XPF subunit of the DNA repair/recombination XPF-ERCC1 endonuclease. This SLX4-dependent activity is mediated by a remarkably specific interaction between SLX4 and the SUMO-charged E2 conjugating enzyme UBC9 and relies not only on newly identified SUMO-interacting motifs (SIMs) in SLX4 but also on its BTB domain. In contrast to its ubiquitin-binding UBZ4 motifs, SLX4 SIMs are dispensable for its DNA interstrand crosslink repair functions. Instead, while detrimental in response to global replication stress, the SUMO E3 ligase activity of the SLX4 complex is critical to prevent mitotic catastrophe following common fragile site expression.

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