FANCM and FAAP24 maintain genome stability via cooperative as well as unique functions.
FANCM and FAAP24 maintain genome stability via cooperative as well as unique functions.
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DOI:
10.1016/j.molcel.2012.12.010
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发表时间:
2013-03-07
期刊:
影响因子:
16
通讯作者:
Li, Lei
中科院分区:
文献类型:
--
作者:
Wang, Yucai;Leung, Justin W.;Jiang, Yingjun;Lowery, Megan G.;Do, Huong;Vasquez, Karen M.;Chen, Junjie;Wang, Weidong;Li, Lei
The DNA remodeling enzyme FANCM and its DNA-binding partner, FAAP24, constitute a complex involved in the activation of Fanconi Anemia (FA) DNA damage response mechanism, but neither gene has distinct patient mutants. In this study, we created isogenic models for both FANCM and FAAP24 and investigated their integrated functions in DNA damage response. We found that FANCM and FAAP24 coordinately facilitate FA pathway activation and suppress sister chromatid exchange. Importantly, we show that FANCM and FAAP24 possess non-overlapping functions such that FAAP24 promotes ATR-mediated checkpoint activation particularly in response to DNA crosslinking agents, whereas FANCM participates in recombination-independent interstrand crosslink repair by facilitating recruitment of lesion incision activities which requires its translocase activity. Our data suggest that FANCM and FAAP24 play multiple while not fully epistatic roles in maintaining genomic integrity.
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