Viruses in the family Reoviridae are non-enveloped particles comprising a segmented double-stranded RNA genome surrounded by a two-layered or multi-layered icosahedral protein capsid. These viruses are classified into two sub-families based on their particle structural organization. Recent studies have focused on high-resolution three-dimensional structures of reovirus particles by using cryo-electron microscopy (cryo-EM) to approach the resolutions seen in X-ray crystallographic structures. The results of cryo-EM image reconstructions allow tracing of most of the protein side chains, and thus permit integration of structural and functional information into a coherent mechanism for reovirus assembly and entry.
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Li, X., Fang, Q. High-resolution 3D structures reveal the biological functions of reoviruses. Virol. Sin. 28, 318–325 (2013). https://doi.org/10.1007/s12250-013-3341-6
- Non-enveloped virus
- Structural basis
- Cell entry