DsDNA-dependent ATPase which acts as a transcription termination factor by coupling ATP hydrolysis with removal of RNA polymerase II from the DNA template. May contribute to mitotic transcription repression. May also be involved in pre-mRNA splicing.
HLodestar/HuF2 associates with CDC5L in cell lysates and HeLa nuclear extracts. It is possible that during the cell division cycle, hLodestar/HuF2s associates with transcription/splicing complexes in order to inhibit transcription/splicing prior to the start of mitosis and/or functions in stabilizing nuclear complexes containing splicing factors (e.g., the CDC5L complex) so that these are available for re-initiation of splicing at the end of mitosis when gene expression is re-established in cells.