Structure-specific DNA-binding protein involved in DNA repair by promoting RAD51-mediated homologous recombination (By similarity). Acts by stimulating D-Loop formation by RAD51: specifically enhances joint molecule formation through its structure-specific DNA interaction and its interaction with RAD51 (By similarity). Binds single-stranded DNA (ssDNA), double-stranded DNA (dsDNA) and secondary DNA structures, such as D-loop structures: has a strong preference for branched-DNA structures that are obligatory intermediates during joint molecule formation (By similarity). Involved in mitotic recombination-dependent replication fork processing (PubMed:25288561). Also involved in meiosis by promoting DMC1-mediated homologous meiotic recombination (By similarity). Monomer. Colocalizes with RAD51 to multiple nuclear foci. Colocalizes with DMC1 on meiotic chromatin.