The Hsp40/DnaJB1, involved in protein translation, folding, and degradation, has shown to be required for an efficient IAV replication as it interacts at early stages of infection with the viral NP, which encapsidates the viral RNA, and facilitates the nuclear import of incoming viral ribonucleoproteins (RNPs) [59] (Figure 2). This evidence concerns the gene DNAJB1 and infection.