Genome Structure and Virion Properties
Genome Structure
The genome of retroviridae is dimeric, unsegmented and contains a single molecule of linear. The genome is a positive-sense, single-stranded RNA. Minor species of non-genomic nucleic acid are also found in virions.
Virion Properties
Virions consist of an envelope, a nucleocapsid, and a nucleoid. Virus capsid is enveloped. Virions are spherical to pleomorphic. They are measured 80-100 nm in diameter. Surface projections are densely dispersed, small or distinctive glycoprotein spikes that cover evenly the surface. Surface projections are 8 nm long. The nucleoid is concentric, or eccentric. The core is spherical. The single-stranded, linear RNA is found to be 7-12 kb in size.
The genome of retroviridae is dimeric, unsegmented and contains a single molecule of linear. The genome is a positive-sense, single-stranded RNA. Minor species of non-genomic nucleic acid are also found in virions.
Virion Properties
Virions consist of an envelope, a nucleocapsid, and a nucleoid. Virus capsid is enveloped. Virions are spherical to pleomorphic. They are measured 80-100 nm in diameter. Surface projections are densely dispersed, small or distinctive glycoprotein spikes that cover evenly the surface. Surface projections are 8 nm long. The nucleoid is concentric, or eccentric. The core is spherical. The single-stranded, linear RNA is found to be 7-12 kb in size.
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posted by Microbiology B @ 10:29 PM
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