Its known binding partners are involved in highly diverse cellular processes including apoptosis (BH3-only proapoptotic proteins, Bim and Bmf [4], [5]), DNA repair (e.g. P53BP1 [6]), transcriptional regulation (e.g. NRF-1 [7]), nuclear transport (e.g. Nup159 and Pak1 [8], [9]), viral infection (e.g. lyssavirus P protein [10]) or cancer development (e.g. Pak1 [11]). Here, PAK1 is linked to viral infectious disease.