ATP-dependent DNA helicase involved in DNA damage repair by homologous recombination and in genome maintenance. Capable of unwinding D-loops (PubMed:18851838, PubMed:22844101, PubMed:22723423). Plays a role in limiting crossover recombinantion during mitotic DNA double-strand break (DSB) repair (PubMed:18851838). Component of a FANCM-MHF complex which promotes gene conversion at blocked replication forks, probably by reversal of the stalled fork (PubMed:18851838, PubMed:20347428). FANCM-MHF also promotes non-crossover recombination in meiotic cells (PubMed:22723423). ATP + H2O = ADP + H(+) + phosphate Hypersensitive to the alkylating agent methyl methanesulfonate (MMS) and the cross-linking agent cisplatin. Belongs to the DEAD box helicase family. DEAH subfamily. FANCM sub-subfamily. Several phenotypes were reported for a triple-alanine mutant. However this data was retracted as several constructs contained a C-terminal deletion instead of the reported triple-alanine mutation. Following strain regeneration, although many phenotypes were not reproducible, the central observations of the publication were confirmed.