Electron microscopy of the Citrus psorosis virus.
Virus classification
Group: Group V ((-)ssRNA)
Order: Unassigned
Family: Ophioviridae

Ophioviridae is a family of viruses characterized by an elongated and highly filamentous and flexible nucleocapsid with helical symmetry.

The protein capsid is non-enveloped and has a constant diameter of 1500–2500 nm and a width of 3 nm, or 9 nm. The capsids form kinked circles, which can collapse to form linear duplex structures, much like a spring.

The entire genome is 1100–1200 nucleotides long.[1]


The family has one genus, Ophiovirus, which has six recognized species. Members of both the family and the genus are referred to as ophioviruses.


  1. ICTVdB Management (2006). Ophiovirus. In: ICTVdB—The Universal Virus Database, version 4. Büchen-Osmond, C. (Ed), Columbia University, New York, USA.
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