Probable DNA helicase that plays a role in meiotic double-strand break (DSB) repair, but seems not required for recombination with the homologous chromosome. May be involved with RAD51 in a backup pathway that repairs meiotic DSB without giving meiotic crossover, in parallel to the meiotic homologous recombination which relies on DMC1. ATP + H2O = ADP + H(+) + phosphate Reduced fertility and seed numbers due to defects in gametogenesis. Belongs to the MCM family.