Capsid vertex-specific component that plays a role during viral DNA encapsidation, assuring correct genome cleavage and presumably stabilizing capsids that contain full-length viral genomes. Participates in the interaction between the capsid and the tegument through interaction with the large tegument protein/LTP. Heterodimerizes with CVC1. Interacts with major capsid protein/MCP and triplex capsid protein 1/TRX1 at the pentamer vertices. Interacts with the large tegument protein/LTP. Belongs to the herpesviridae CVC2 protein family.