Ready-to-use ELISA kits are available for the detection of RVLG, an alias of the protein, DEAD-box helicase 4. The official gene symbol is DDX4. The protein, with a mass of 79.3 kDa and length of 724 residues, is reported to be cytoplasmic. It is a member of the DEAD box helicase family, DDX4/VASA subfamily and may be known by other names, including: VASA, DEAD/H (Asp-Glu-Ala-Asp/His) box polypeptide 4, DEAD box protein 4, DEAD (Asp-Glu-Ala-Asp) box polypeptide 4, and probable ATP-dependent RNA helicase DDX4.