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


ABSTRACT: Addition of poly(ADP-ribose) (PAR) is an important post-translational modification in higher eukaryotes. Several DNA repair and checkpoint proteins possess specific PAR-binding zinc-finger (PBZ) modules critical for function. Here, we present solution structures of the two PBZ modules of aprataxin and PNK-like factor (APLF), revealing a novel type of zinc finger. By combining in vivo PAR-binding data with NMR interaction data using PAR fragments, we propose a structural basis for PBZ-PAR recognition.

SUBMITTER: Eustermann S 

PROVIDER: S-EPMC2912505 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature

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

Eustermann Sebastian S   Brockmann Christoph C   Mehrotra Pawan Vinod PV   Yang Ji-Chun JC   Loakes David D   West Stephen C SC   Ahel Ivan I   Neuhaus David D  

Nature structural & molecular biology 20100124 2


Addition of poly(ADP-ribose) (PAR) is an important post-translational modification in higher eukaryotes. Several DNA repair and checkpoint proteins possess specific PAR-binding zinc-finger (PBZ) modules critical for function. Here, we present solution structures of the two PBZ modules of aprataxin and PNK-like factor (APLF), revealing a novel type of zinc finger. By combining in vivo PAR-binding data with NMR interaction data using PAR fragments, we propose a structural basis for PBZ-PAR recogni  ...[more]

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