RI(dl)-2 stabilizes nucleoprotein filaments in a nonfunctional state, which are incapable of D-loop activity and simultaneously shielded from related (e.g., RAD52-mediated) pathways that promote single-strand annealing (SSA).
RI(dl)-2 does not modulate the affinity of RAD51 to ssDNA or the stability of preformed RAD51-ssDNA complexes when challenged with high concentrations of salt.