Anti-RNAH antibodies enable researchers to detect and measure the RNAH antigen in biological samples. This target is a reported synonym of the DDX19B gene, which encodes DEAD-box helicase 19B. This protein is an ATP-dependent RNA helicase involved in mRNA export from the nucleus. The human version of RNAH has a canonical amino acid length of 479 residues and a protein mass of 53.9 kilodaltons, although 4 isoforms have been identified. It is reported to be localized in the nucleus and cytoplasm of cells and widely expressed in many tissue types. RNAH is a member of the DEAD box helicase protein family.