Lect. 6 composition & Architecture of plant viruses
Lect. 6 composition & Architecture of plant viruses
Lect. 6 composition & Architecture of plant viruses
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Viral Composition<br />
• Proteins<br />
• 60-95% <strong>of</strong> the virion<br />
• Repeating subunits, identical for each virus type but<br />
varies from virus to virus and even from strain to<br />
strain<br />
• TMV subunits - 158 amino acids with a mass <strong>of</strong> 17,600<br />
Daltons (17.6 kDa, kd or K)<br />
• TYMV – 20,600 Dalton protein<br />
• Nucleic acid is 5-40% <strong>of</strong> the virion<br />
• Spherical <strong>viruses</strong>: 20-40%<br />
• Helical <strong>viruses</strong>: 5-6%
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