EIF5A and infection: Specifically, a pharmacologically [22], [23], [41]–[46], [52]–[54] or genetically [47]–[49] induced defect of hypusine-containing eIF5A in culture both activates apoptosis in susceptible cells [22], [41]–[48] and inhibits infection by human [22], [23], [49], [52], [53] or feline [54] immunodeficiency virus.