WRN exonuclease structure and molecular mechanism imply an editing role in DNA end processing.
Perry, J.J., Yannone, S.M., Holden, L.G., Hitomi, C., Asaithamby, A., Han, S., Cooper, P.K., Chen, D.J., Tainer, J.A.(2006) Nat Struct Mol Biol 13: 414-422
- PubMed: 16622405 
- DOI: 10.1038/nsmb1088
- Primary Citation of Related Structures:  
2FBT, 2FBV, 2FBX, 2FBY, 2FC0 - PubMed Abstract: 
WRN is unique among the five human RecQ DNA helicases in having a functional exonuclease domain (WRN-exo) and being defective in the premature aging and cancer-related disorder Werner syndrome. Here, we characterize WRN-exo crystal structures, biochemical activity and participation in DNA end joining ...