ATP-dependent DNA helicase Q5 (RECQL5)

Isoform beta is a DNA helicase that plays an important role in DNA replication, transcription and repair. Inhibits elongation of postponed transcripts in DNA damage sites by binding to the RNA polymerase II subunit POLR2A and blocking the TCEA1 binding site.

Required for mitotic chromosome separation after cross-over occasions and cell cycle progress. Required for efficient DNA repair, including repair of inter-strand cross-links.