title: XRCC1 and DNA strand break repair.
abstract: DNA single-strand breaks can arise indirectly, as normal intermediates of DNA base excision repair, or directly from damage to deoxyribose. Because single-strand breaks are induced by endogenous reactive molecules such as reactive oxygen species, these lesions pose a continuous threat to genetic integrity. XRCC1 protein plays a major role in facilitating the repair of single-strand breaks in mammalian cells, via an ability to interact with multiple enzymatic components of repair reactions. Here, the protein-protein interactions facilitated by XRCC1, and the repair processes in which these interactions operate, are reviewed. Models for the repair of single-strand breaks during base excision repair and at direct breaks are presented.
authors.affiliation: Genome Damage and Stability Centre, University of Sussex, Science Park Road, BN1 9RQ, Falmer Brighton, UK. k.w.caldecott@sussex.ac.uk
authors.forename: Keith W
authors.initials: KW
authors.lastname: Caldecott
mesh_terms: D000818:Animals; D016466:CHO Cells; D006224:Cricetinae; D004249:DNA Damage; D004260:DNA Repair; D004277:DNA, Single-Stranded / Q000235:genetics*; D004268:DNA-Binding Proteins / Q000502:physiology*; D008954:Models, Biological; D000076105:X-ray Repair Cross Complementing Protein 1
chemical_list: D004277:DNA, Single-Stranded; D004268:DNA-Binding Proteins; D000076105:X-ray Repair Cross Complementing Protein 1