RPS6KA3 and infection: Filamin A phosphorylation disappeared at 2 h post-infection and then the level strongly increased again starting from the immediately early stage after infection with Bac16 viruses (6 h post-infection) whereas infection with STOP45 viruses weakly increased the level at the delayed early stage (24 h post-infection), This finding is consistent with the timing of RSK phosphorylation and ORF45 expression (Fig 1E).