XRCC1 and DNA strand break repair - PubMed (original) (raw)

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XRCC1 and DNA strand break repair

Keith W Caldecott. DNA Repair (Amst). 2003.

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.

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