This family represents a conserved region approximately 200 residues long within eukaryotic RecQ helicase protein-like 5 (RecQ5). The RecQ helicases have been implicated in DNA repair and recombination, and RecQ5 may have an important role in DNA metabolism [1].

1: Human RecQ5beta, a large isomer of RecQ5 DNA helicase, localizes in the nucleoplasm and interacts with topoisomerases 3alpha and 3beta. Shimamoto A, Nishikawa K, Kitao S, Furuichi Y; Nucleic Acids Res 2000;28:1647-1655. PMID:10710432