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1: DNA Repair (Amst). 2006 Mar 7;5(3):362-8. Epub 2006 Jan 18.Click here to read Links

Structure of an Xrcc4-DNA ligase IV yeast ortholog complex reveals a novel BRCT interaction mode.

Doré AS, Furnham N, Davies OR, Sibanda BL, Chirgadze DY, Jackson SP, Pellegrini L, Blundell TL.

Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK. Andrew.Dore@icr.ac.uk

DNA ligase IV catalyses the final ligation step in the non-homologous end-joining (NHEJ) DNA repair pathway and requires interaction of the ligase with the Xrcc4 'genome-guardian', an essential NHEJ factor. Here we report the 3.9 A crystal structure of the Saccharomyces cerevisiae Xrcc4 ortholog ligase interacting factor 1 (Lif1p) complexed with the C-terminal BRCT domains of DNA ligase IV (Lig4p). The structure reveals a novel mode of protein recognition by a tandem BRCT repeat, and in addition provides a molecular basis for a human LIG4 syndrome clinical condition.

PMID: 16388993 [PubMed - indexed for MEDLINE]

Structures reported by this article