(A) Rad51, rad51 K191A (K191A), and rad51 K191R (K191R) were incubated with His-tagged Rad54. Protein complexes were captured on nickel NTA agarose beads and then eluted with SDS. The supernatant (S), wash (W), and SDS-eluate (E) were analyzed by SDS-PAGE.
(B) ATP hydrolysis by Rad54 was examined with or without Rad51, rad51 K191A, and rad51 K191R.