Figure 4.
SWI5-SFR1 but not RAD51AP1 mediates ADP–ATP exchange of RAD51 filament. (A) Schematic of the filter-binding assay to monitor ADP–ATP exchange within the RAD51-ssDNA presynaptic filament. (B) SWI5-SFR1 facilitates ADP–ATP exchange of RAD51 filament in a dosage-dependent manner. (C) There is no enhancement of nucleotide exchange by SWI5-SFR1 on the omission of ssDNA. (D) RAD51AP1 lacks the ability to facilitate ADP–ATP exchange within the RAD51 presynaptic filament. (B–D) Error bars represent the standard deviation (±SD) calculated based on at least three independent experiments. Symbol: S5S1, SWI5-SFR1.