KLK10 and influenza: Our previous comparative study of influenza nuclear export signals (NESs), including matrix 1 (M1)-NES, non-structural 1 (NS1)-NES, nuclear export protein (NEP)-NES1, NEP-NES2, NP-NES1, NP-NES2, and NP-NES3, identified NP-NES3 as a promising antiviral drug target [14].