Facilitates virus attachment to oral epithelial cells by binding to host beta1 integrin family. Participates in rearrangement of cellular actin to increase intercellular contacts by binding BDLF2 and thereby promote virus cell-to-cell spreading (By similarity). Interacts with BDLF2. Interacts with host beta1 integrin family (By similarity). In EBV-infected polarized oral epithelial cells, is transported to the basolateral membranes and colocalizes with beta1 integrin. The RGD motif presumably is the main binding site to host beta1 integrins. Extensively glycosylated by O-linked oligosaccharides. Belongs to the herpesviridae BMRF2 family.