Anti-EIF4D antibodies enable researchers to detect and measure the EIF4D antigen in biological samples. This target is a reported synonym of the EIF5A gene, which encodes eukaryotic translation initiation factor 5A. This protein is known to function in viral immune response and the regulation of transcription, among other biological roles. The human version of EIF4D has a canonical amino acid length of 154 residues and a protein mass of 16.8 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the membrane, nucleus, ER, and cytoplasm of cells and widely expressed in many tissue types. Other names for this target antigen include EIF5A1, EIF5A1, and FABAS.