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Circular ssRNA viruses

These viruses and viroids are characterized by a circular single stranded RNA genome, encoding for ribozymes but no capsids. It comprises viruses (Ribozyviria realm, Ambiviricota phylum from riboviria), viroids, retroviroid and obelisk.

Ambiviricota (Riboviria) image RdRp Ambi-type, ribozymes.

Suforviricetes

Order: Crytulvirales
Ribozyviria image No polymerase, HDV-type ribozyme

Obelisk Hammerhead-type ribozyme
Not viruses
Viroid No proteins, Hammerhead-type ribozyme
no ribozyme, no proteins
  • Pospiviroidae
    • image Apscaviroid
    • image Cocadviroid
    • image Coleviroid
    • image Hostuviroid
    • image Pospiviroid
Retroviroid No proteins, Hammerhead-type ribozyme

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Retrozyme No proteins, Hammerhead-type ribozyme image

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