This family includes attachment proteins from respiratory synctial virus. Glycoprotein G has not been shown to have any neuraminidase or hemagglutinin activity (Swiss-Prot). The amino terminus is thought to be cytoplasmic, and the carboxyl terminus extracellular. The extracellular region contains four completely conserved cysteine residues.
Jiyao W et al.(2023). "The conserved domain database in 2023.",