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Capsid
A capsid is the protein shell of a virus. It is made of several protein subunits. The observable 3-dimensional subunits are called 'capsomeres'. The capsid encloses the nucleic acid of the virus.
Capsids are broadly classified according to their structure.[1][2] Some viruses, such as bacteriophages, have developed more complicated structures.[3] The icosahedral shape, which has 20 equilateral triangular faces, approximates a sphere, while the helical shape is cylindrical.[4] The capsid faces may consist of one or more proteins. For example, the foot-and-mouth disease virus capsid has faces consisting of three proteins called VP1–3.[5]
- ↑ Lidmar J, Mirny L, Nelson DR (2003). "Virus shapes and buckling transitions in spherical shells". Phys. Rev. E. 68 (5): 051910. arXiv:cond-mat/0306741. doi:10.1103/PhysRevE.68.051910. PMID 14682823. S2CID 6023873.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Vernizzi G, Olvera de la Cruz M (2007). "Faceting ionic shells into icosahedra via electrostatics". Proc. Natl. Acad. Sci. USA. 104 (47): 18382–18386. doi:10.1073/pnas.0703431104. PMC 2141786. PMID 18003933.
- ↑ Vernizzi G, Sknepnek R, Olvera de la Cruz M (2011). "Platonic and Archimedean geometries in multicomponent elastic membranes". Proc. Natl. Acad. Sci. USA. 108 (11): 4292–4296. doi:10.1073/pnas.1012872108. PMC 3060260. PMID 21368184.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Branden, Carl and Tooze, John (1991). Introduction to Protein Structure. New York: Garland. pp. 161–162. ISBN 0-8153-0270-3.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ↑ "Virus Structure (web-books.com)". Archived from the original on 2021-02-07. Retrieved 2014-04-23.
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