PPP1R3A and infection: Although the molecular mechanism of how gM regulates the virus-induced fusion process is unclear, gM certainly interacts with a variety of cellular proteins in this process (Changotra et al., 2016; Polpitiya Arachchige et al., 2018), and it may provide favorable conditions for the viruses to enter cells and generate more infectious progeny virions, as well as gain an advantage in multiple infections.