Bunyavirus has three genomic segments: small (S), middle-sized (M), and large (L). The S segment encodes the nucleocapsid and a non-structural protein. The M segment codes for two glycoproteins, G1 and G2, and another non-structural protein (NSm). The L segment codes for an RNA polymerase. This family contains the G1 glycoprotein which is the viral attachment protein.
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