DNA helicase which participates in several chromatin remodeling complexes, including the SWR1 and the INO80 complexes. The SWR1 complex mediates the ATP-dependent exchange of histone H2A for the H2A variant HZT1 leading to transcriptional regulation of selected genes by chromatin remodeling. The INO80 complex remodels chromatin by shifting nucleosomes and is involved in DNA repair. Also involved in pre-rRNA processing (By similarity). ATP + H2O = ADP + H(+) + phosphate May form heterododecamers with RVB1. Component of the SWR1 chromatin remodeling complex, the INO80 chromatin remodeling complex, and of the R2TP complex (By similarity). Interacts with dil1. Belongs to the RuvB family.