The Fanconi anemia pathway promotes replication-dependent DNA interstrand cross-link repair.
The Fanconi anemia pathway promotes replication-dependent DNA interstrand cross-link repair.
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DOI:
10.1126/science.1182372
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发表时间:
2009-12-18
期刊:
影响因子:
--
通讯作者:
Walter JC
中科院分区:
文献类型:
--
作者:
Knipscheer P;Räschle M;Smogorzewska A;Enoiu M;Ho TV;Schärer OD;Elledge SJ;Walter JC
Fanconi anemia is a human cancer predisposition syndrome caused by mutations in thirteen Fanc genes. The disorder is characterized by genomic instability and cellular hypersensitivity to chemicals that generate DNA interstrand crosslinks (ICLs). A central event in the activation of the Fanconi anemia pathway is the mono-ubiquitylation of the FANCI-FANCD2 complex, but how this complex confers ICL resistance remains enigmatic. We make use of a cell-free system to show that the FANCI-FANCD2 complex is required for replication-dependent ICL repair. Removal of FANCD2 from extracts inhibits nucleolytic incisions near the ICL as well as translesion DNA synthesis past the lesion. Reversal of these defects requires ubiquitylated FANCI-FANCD2. Our results show that multiple steps of the essential S phase ICL repair mechanism fail when the Fanconi anemia pathway is compromised.
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DOI:
10.1016/j.mrfmmm.2009.02.003
发表时间:
2009-07-31
影响因子:
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