Porcine reproductive and respiratory syndrome virus 2b
This family consists of several Porcine reproductive and respiratory syndrome virus (PRRSV) ORF2b proteins. The function of this family is unknown however it is known that large amounts of 2b protein are present in the virion and it is thought that this protein may be an integral component of the virion.
Jiyao W et al.(2023). "The conserved domain database in 2023.",