Plays a role in the replication of the mitochondrial genome and the maintenance of its telomeres (PubMed:26743001). Able to catalyze strand annealing and D-loop formation (PubMed:26743001). Binds a wide variety of DNA substrates (PubMed:26743001). Exhibited the highest affinity for DNA molecules carrying 3' ssDNA overhangs (Y-form, 3' FLAP, 3' overhang) and for substrates with complex structures (X-O and Fork) (PubMed:26743001). Forms homogeneous ring-shaped structures at the ssDNA native telomeres ends (PubMed:26743001). Oligomers seem to bind to the ssDNA as a filament until they reach the double-stranded region and induce the formation of bends and loops within the double-stranded part of the molecules (PubMed:26743001). Forms homooligomers in vitro (PubMed:26743001). Belongs to the MGM101 family.