Existence of pUL23 impairs the interaction between pUL85 and pUL46. GST-Fusion proteins of pUL85 bound to glutathion-Sepharose bead were incubated with Myc-tagged pUL46 together with Flag-tagged pUL23. Bound proteins were analyzed by western blot (WB) with anti-Myc and anti-Flag antibody, respectively