title: The RecQ helicase-topoisomerase III-Rmi1 complex: a DNA structure-specific 'dissolvasome'?
abstract: RecQ helicases, together with topoisomerase III and Rmi1 family proteins, form an evolutionarily conserved complex that is essential for the maintenance of genome integrity. This complex, which we term RTR, is capable of, or has been implicated in, the processing of a diverse array of DNA structures, and we propose here that it functions in a coordinated fashion as a DNA structure-specific 'dissolvasome'. Little is known about how the RTR complex might be regulated or targeted to various DNA structures in vivo. Recent findings indicate that the components of the RTR complex might activate the cell cycle checkpoint machinery as well as be a target of checkpoint kinases, suggesting that these events are crucial to ensure faithful DNA replication and chromosome segregation.
authors.affiliation: Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.
authors.forename: Hocine W
authors.initials: HW
authors.lastname: Mankouri
authors.forename: Ian D
authors.initials: ID
authors.lastname: Hickson
mesh_terms: D004264:DNA Topoisomerases, Type I / Q000737:chemistry / Q000378:metabolism*; D004271:DNA, Fungal / Q000737:chemistry / Q000378:metabolism*; D004268:DNA-Binding Proteins; D009690:Nucleic Acid Conformation; D053484:RecQ Helicases / Q000737:chemistry / Q000378:metabolism*; D029701:Saccharomyces cerevisiae Proteins / Q000737:chemistry / Q000378:metabolism*; D015398:Signal Transduction
chemical_list: D004271:DNA, Fungal; D004268:DNA-Binding Proteins; C502206:Rmi1 protein, S cerevisiae; D029701:Saccharomyces cerevisiae Proteins; D053484:RecQ Helicases; D004264:DNA Topoisomerases, Type I