Solution structures of the two PBZ domains from human APLF and their interaction with poly(ADP-ribose).

Solution structures of the two PBZ domains from human APLF and their interaction with poly(ADP-ribose).
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DOI:
10.1038/nsmb.1747
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发表时间:
2010-02
影响因子:
16.8
通讯作者:
--
中科院分区:
生物学1区
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多聚ADP核糖基化是高等真核生物中重要的翻译后修饰。几种DNA修复/检查点蛋白具有对功能至关重要的特异性PAR结合锌指(PBZ)模块。在这里,我们提出的解决方案结构的两个PBZ模块的APLF(Aprataxin和PNK样因子),揭示了一种新型的锌指。通过结合体内PAR结合数据与NMR相互作用数据使用PAR片段,我们提出了PBZ-PAR识别的结构基础。
Poly(ADP-ribosyl)ation represents an important post-translational modification in higher eukaryotes. Several DNA repair/checkpoint proteins possess specific PAR-Binding Zinc finger (PBZ) modules critical for function. Here, we present solution structures of the two PBZ modules of APLF (Aprataxin and PNK-like factor), revealing a novel type of zinc finger. By combining in vivo PAR-binding data with NMR interaction data using PAR fragments, we suggest a structural basis for PBZ-PAR recognition.
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