Plays a role in host nuclear actin polymerization by recruiting p78/73 protein that is capable of activating an actin-related protein 2/3 complex to initiate nuclear actin polymerization. Forms a complex with proteins E27 and p78/83. The interaction with p78/83 mediates nuclear translocation of P78/83. Interacts with protein Ac102. Interacts with IE0. Belongs to the baculoviridae C42 protein family.