Rubella membrane glycoprotein E2 (IPR008821)

Short name: Rubella_E2

Overlapping homologous superfamilies


Domain relationships



Rubella virus (RV), the sole member of the genus Rubivirus within the family Togaviridae, is a small enveloped, positive strand RNA virus. The nucleocapsid consists of 40S genomic RNA and a single species of capsid protein which is enveloped within a host-derived lipid bilayer containing two viral glycoproteins, E1 (58kDa) and E2 (42-46kDa). In virus infected cells, RV matures by budding either at the plasma membrane, or at the internal membranes depending on the cell type and enters adjacent uninfected cells by a membrane fusion process in the endosome, directed by E1-E2 heterodimers. The heterodimer formation is crucial for E1 transport out of the endoplasmic reticulum to the Golgi and plasma membrane. In RV E1, a cysteine at position 82 is crucial for the E1-E2 heterodimer formation and cell surface expression of the two proteins [PMID: 11682134]. This family is found together with IPR008819 and IPR008820.

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

No terms assigned in this category.

Cellular Component

GO:0016021 integral component of membrane
GO:0019013 viral nucleocapsid

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.