May act as a helicase that plays a role in RNA metabolism in multiple tissues and organs within the developing embryo. Interacts with POLR2A. Interacts with SMYD3; the interaction may bridge SMYD3 and RNA polymerase II (By similarity). Interacts with SMYD2. May be due to intron retention. Belongs to the DNA2/NAM7 helicase family. Extended N-terminus.