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- W2890864694 abstract "Homologous recombination (HR) is a crucial pathway for the repair of DNA double-strand breaks. BRCA1/2 breast cancer proteins are key players in HR via their mediation of RAD51 nucleofilament formation and function; however, their individual roles and crosstalk in vivo are unknown. Here we use super-resolution (SR) imaging to map the spatiotemporal kinetics of HR proteins, revealing the interdependent relationships that govern the dynamic interplay and progression of repair events. We show that initial single-stranded DNA/RAD51 nucleofilament formation is mediated by RAD52 or, in the absence of RAD52, by BRCA2. In contrast, only BRCA2 can orchestrate later RAD51 recombinase activity during homology search and resolution. Furthermore, we establish that upstream BRCA1 activity is critical for BRCA2 function. Our analyses reveal the underlying epistatic landscape of RAD51 functional dependence on RAD52, BRCA1, and BRCA2 during HR and explain the phenotypic similarity of diseases associated with mutations in these proteins." @default.
- W2890864694 created "2018-09-27" @default.
- W2890864694 creator A5007629971 @default.
- W2890864694 creator A5023457100 @default.
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- W2890864694 creator A5081602466 @default.
- W2890864694 creator A5086213678 @default.
- W2890864694 creator A5086360774 @default.
- W2890864694 date "2018-09-24" @default.
- W2890864694 modified "2023-10-12" @default.
- W2890864694 title "Spatiotemporal dynamics of homologous recombination repair at single collapsed replication forks" @default.
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