DNA asymmetry promotes SUMO modification of the single-stranded DNA-binding protein RPA.

Abstract excerpt

Repair of DNA double-stranded breaks by homologous recombination (HR) is dependent on DNA end resection and on post-translational modification of repair factors. In budding yeast, single-stranded DNA is coated by replication protein A (RPA) following DNA end resection, and DNA-RPA complexes are then SUMO-modified by the E3 ligase Siz2 to promote repair. Here, we show using enzymatic assays that DNA duplexes...

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