Possesses single-stranded DNA-stimulated ATPase and ATP dependent DNA helicase (3' to 5') activity suggesting a role in nuclear processes such as recombination and transcription. May participate in several chromatin remodeling complexes that mediate the ATP-dependent exchange of histones and remodel chromatin by shifting nucleosomes. Involvement in these complexes is likely required for transcriptional activation of selected genes and DNA repair in response to DNA damage. Involved in the Ce-Tor signaling pathway whereby it is required for the accumulation and localization of box C/D snoRNP to nucleoli to regulate ribosomal maturation and thus protein synthesis. Antagonizes the transcriptional activity of transcription factor pha-4, to control postembryonic development and adult longevity. Has a role in pharyngeal development. Has a role in gonadal development