Deubiquitination of FANCD2 Is Required for DNA Crosslink Repair
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Deubiquitination of FANCD2 Is Required for DNA Crosslink Repair. / Oestergaard, Vibe H.; Langevin, Frederic; Kuiken, Hendrik J.; Pace, Paul; Niedzwiedz, Wojciech; Simpson, Laura J.; Ohzeki, Mioko; Takata, Minoru; Sale, Julian E.; Patel, Ketan J.
In: Molecular Cell, Vol. 28, No. 5, 14.12.2007, p. 798-809.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Deubiquitination of FANCD2 Is Required for DNA Crosslink Repair
AU - Oestergaard, Vibe H.
AU - Langevin, Frederic
AU - Kuiken, Hendrik J.
AU - Pace, Paul
AU - Niedzwiedz, Wojciech
AU - Simpson, Laura J.
AU - Ohzeki, Mioko
AU - Takata, Minoru
AU - Sale, Julian E.
AU - Patel, Ketan J.
PY - 2007/12/14
Y1 - 2007/12/14
N2 - Monoubiquitination of FANCD2 and PCNA promotes DNA repair. It causes chromatin accumulation of FANCD2 and facilitates PCNA's recruitment of translesion polymerases to stalled replication. USP1, a protease that removes monoubiquitin from FANCD2 and PCNA, was thought to reverse the DNA damage response of these substrates. We disrupted USP1 in chicken cells to dissect its role in a stable genetic system. USP1 ablation increases FANCD2 and PCNA monoubiquitination but unexpectedly results in DNA crosslinker sensitivity. This defective DNA repair is associated with constitutively chromatin-bound, monoubiquitinated FANCD2. In contrast, persistent PCNA monoubiquitination has negligible impact on DNA repair or mutagenesis. USP1 was previously shown to autocleave after DNA damage. In DT40, USP1 autocleavage is not stimulated by DNA damage, and expressing a noncleavable mutant in the USP1 knockout strain partially rescues crosslinker sensitivity. We conclude that efficient DNA crosslink repair requires FANCD2 deubiquitination, whereas FANCD2 monoubiquitination is not dependent on USP1 autocleavage.
AB - Monoubiquitination of FANCD2 and PCNA promotes DNA repair. It causes chromatin accumulation of FANCD2 and facilitates PCNA's recruitment of translesion polymerases to stalled replication. USP1, a protease that removes monoubiquitin from FANCD2 and PCNA, was thought to reverse the DNA damage response of these substrates. We disrupted USP1 in chicken cells to dissect its role in a stable genetic system. USP1 ablation increases FANCD2 and PCNA monoubiquitination but unexpectedly results in DNA crosslinker sensitivity. This defective DNA repair is associated with constitutively chromatin-bound, monoubiquitinated FANCD2. In contrast, persistent PCNA monoubiquitination has negligible impact on DNA repair or mutagenesis. USP1 was previously shown to autocleave after DNA damage. In DT40, USP1 autocleavage is not stimulated by DNA damage, and expressing a noncleavable mutant in the USP1 knockout strain partially rescues crosslinker sensitivity. We conclude that efficient DNA crosslink repair requires FANCD2 deubiquitination, whereas FANCD2 monoubiquitination is not dependent on USP1 autocleavage.
KW - DNA
KW - PROTEINS
UR - http://www.scopus.com/inward/record.url?scp=36749100034&partnerID=8YFLogxK
U2 - 10.1016/j.molcel.2007.09.020
DO - 10.1016/j.molcel.2007.09.020
M3 - Journal article
C2 - 18082605
AN - SCOPUS:36749100034
VL - 28
SP - 798
EP - 809
JO - Molecular Cell
JF - Molecular Cell
SN - 1097-2765
IS - 5
ER -
ID: 238744045