"Eukaryotic initiation factor 5A (eIF5A) (eIF-4D eIF-5A) stimulates ribosomal peptidyltransferase activity transport of HIV-1-mRNAs and binds exportins 1 and 4. Contains hypusine at lys 50. Mouse EIF5A1 and EIF5A2 encode two isoforms: eIF5AI and eIF5AII."xsd:string