Oxidation state of the XRCC1 N-terminal domain regulates DNA polymerase beta binding affinity.
Cuneo, M.J., London, R.E.(2010) Proc Natl Acad Sci U S A 107: 6805-6810
- PubMed: 20351257 
- DOI: 10.1073/pnas.0914077107
- Primary Citation of Related Structures:  
3K75, 3K77, 3LQC - PubMed Abstract: 
Formation of a complex between the XRCC1 N-terminal domain (NTD) and DNA polymerase beta (Pol beta) is central to base excision repair of damaged DNA. Two crystal forms of XRCC1-NTD complexed with Pol beta have been solved, revealing that the XRCC1-NTD is able to adopt a redox-dependent alternate fold, characterized by a disulfide bond, and substantial variations of secondary structure, folding topology, and electrostatic surface ...