conveys incoming ssDNA to [[protein|A44D4677FB70BE8F554BF1001A500F817C7DA95F]]; facilitates the displacement of both SSBs ([[protein|1CDF658441061EA476E27C2E60DEE45C4F45AC15]] and [[protein|8DE39680CA7663803A107066FBE9AFFCC77DB72A]]), increases [[protein|A44D4677FB70BE8F554BF1001A500F817C7DA95F]] nucleation onto SSB-coated ssDNA, and mediates DNA strand annealing, required to internalize and to recombine ssDNA with homologous resident duplex