Enables several functions, including ATP binding activity; ATP hydrolysis activity; and transcription coregulator activity. Acts upstream of or within positive regulation of transcription by RNA polymerase II. Located in nuclear speck. Is expressed in central nervous system; embryo; limb; and neural ectoderm. Orthologous to human RAD54L2 (RAD54 like 2). [provided by Alliance of Genome Resources, Apr 2022]