Author: San MartÃn, Carmen
Title: Structure and Assembly of Complex Viruses Cord-id: 0x3nt6si Document date: 2013_2_16
ID: 0x3nt6si
Snippet: Viral particles consist essentially of a proteinaceous capsid protecting a genome and involved also in many functions during the virus life cycle. In simple viruses, the capsid consists of a number of copies of the same, or a few different proteins organized into a symmetric oligomer. Structurally complex viruses present a larger variety of components in their capsids than simple viruses. They may contain accessory proteins with specific architectural or functional roles; or incorporate non-prot
Document: Viral particles consist essentially of a proteinaceous capsid protecting a genome and involved also in many functions during the virus life cycle. In simple viruses, the capsid consists of a number of copies of the same, or a few different proteins organized into a symmetric oligomer. Structurally complex viruses present a larger variety of components in their capsids than simple viruses. They may contain accessory proteins with specific architectural or functional roles; or incorporate non-proteic elements such as lipids. They present a range of geometrical variability, from slight deviations from the icosahedral symmetry to complete asymmetry or even pleomorphism. Putting together the many different elements in the virion requires an extra effort to achieve correct assembly, and thus complex viruses require sophisticated mechanisms to regulate morphogenesis. This chapter provides a general view of the structure and assembly of complex viruses.
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