Glycoprotein G1 is a homotrimer; disulfide-linked. Glycoprotein G2 is a homotrimer. GP2 homotrimers bind with GP1 homotrimers to form, with the stable signal peptide, the GP-complex. Interacts with host DAG1. In infected cell, this interaction reduces the expression of functional host DAG1. GP-complex interacts with protein Z, which interacts with ribonucleocapsid; these interactions supposely induce virion budding.