Minor capsid protein involved in virus transmission by the vector. Associated with one extremity of viral particles. This protein is translated as a fusion protein by episodic readthrough of the termination codon at the end of the capsid protein. Readthrough of the terminator codon TGA occurs between the codons for Ser-176 and Arg-178, thereby producing the 84 kDa readthrough protein. Belongs to the virgaviridae capsid protein family.