Hantaan virus (HTNV) is an enveloped, single-stranded, negative-sense RNA virus species of Old World Hantavirus. The M RNA encodes a polyprotein that is cotranslationally cleaved to yield the envelope glycoproteins G1 and G2. G1 and G2 glycoproteins form heterodimers and are then transported from the endoplasmic reticulum to the Golgi complex, where glycosylation is completed.