Meiotic recombination factor component of recombination bridges involved in meiotic double-strand break repair. Modulates the localization of recombinases DMC1:RAD51 to meiotic double-strand break (DSB) sites through the interaction with BRCA2 and its recruitment during meiotic recombination (By similarity) (PubMed:31242413). Indispensable for the DSB repair, homologous synapsis, and crossover formation that are needed for progression past metaphase I, is essential for spermatogenesis and male fertility (By similarity). Required for proper recombinase recruitment in female meiosis (By similarity). Inhibits BNC1 transcriptional activity during spermatogenesis, probably by sequestering it in the cytoplasm (By similarity). May be involved in modulating HSF2 activation in testis (PubMed:9651507). Associates with HSF2 (PubMed:9651507). The interaction seems to occur between the trimerization domain of HSF2 and the N-terminal hydrophilic region of HSF2BP (PubMed:9651507). Interacts (via C-terminus) with BNC1 (By similarity). Interacts (via N-terminus) with BRCA2 and BRME1; the interactions are direct and allow the formation of a ternary complex. The complex BRME1:HSF2BP:BRCA2 interacts with SPATA22, MEIOB and RAD51 (By similarity) (PubMed:31242413). Localizes on double-strand breaks (DSBs) in mitotic and meiotic chromosomes. Testis specific. Overexpressed in some tumors (PubMed:31242413). Sumoylated by UBE2I in response to MEKK1-mediated stimuli. The disease is caused by variants affecting the gene represented in this entry.