Morphology
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Virions are small (19-24 nm in diameter), spherical, single stranded and non enveloped. Virions consist of a capsid. During their life cycle, virions have an extracellular phase. Virus capsid is not enveloped. Virions are not tailed. Capsid/nucleocapsid is round and exhibits icosahedral symmetry.
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The genome is monomeric; not segmented and contains a single molecule of circular, negative-sense, single-stranded DNA. The complete genome is 2298-2319 nucleotides long.The viral genome encodes structural proteins and non-structural proteins. Virions consist of numerous proteins located in the capsid.
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Last modified: Monday, 4 October 2010, 6:01 AM
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