Sequential Assembly of Virus Particles
Animals and plants have a pleasing variety of shapes. But most virus particles are either rods or spheres. The reason is that virus particles are like surface crystals with a regular arrangement of their constituent molecules. Viruses usually are rods or spheres because there are only two kinds of symmetry for surface crystals: helical symmetry, which gives rods, and cubic symmetry, which gives spheres or polyhedra. The regularity of the structure of viruses reflects the fact that they assemble themselves by a process akin to crystalization.
KeywordsVirus Particle Assembly Line Phage Particle Bacteriophage Lambda Normal Head
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