RV gE2 (residues 31-105) protein.The protein contains the Rubella Virus glycoprotein E2immunodominant regions, amino acids 31-105.The protein is purified by proprietary chromatographictechnique.Rubella virus is an enveloped positivestrand RNA virus ofthe family TOGAVIRIDAE. The genome encodes two openreading frames (ORFs): the 5-proximal ORF encodes viralnonstructural proteins (NSP) that are responsible for viralgenome replication, while the 3-proximal ORF encodesthree virion structural proteins (SP), the capsid protein(CP), and the two envelope glycoproteins, E2 and E1.During virus assembly, the capsid interacts with genomicRNA to form nucleocapsids. The rubella virus (RV)structural proteins: capsid, E2, and E1 are synthesized asa polyprotein precursor. The signal peptide that initiatestranslocation of E2 into the lumen of the endoplasmicreticulum remains attached to the carboxy terminus of thecapsid protein after cleavage by signal peptidase.;