Role of capsid proteins

Methods Mol Biol. 2008;451:21-31. doi: 10.1007/978-1-59745-102-4_2.


Coat proteins (CPs) of all plant viruses have an early function in disassembly of parental virus and a late function in assembly of progeny virus. Depending on the virus, however, CPs may play a role in many steps of the infection cycle in between these early and late functions. It has been shown that CPs can play a role in translation of viral RNA, targeting of the viral genome to its site of replication, cell-to-cell and/or systemic movement of the virus, symptomatology and virulence of the infection, activation of R gene-mediated host defenses, suppression of RNA silencing, interference with suppression of RNA silencing, and determination of the specificity of virus transmission by vectors. These functions are reviewed in this chapter.

MeSH terms

  • Capsid Proteins / physiology*
  • Genome, Viral
  • Plant Viruses / genetics
  • Plant Viruses / physiology*
  • Plants / virology*
  • Protein Biosynthesis
  • RNA, Viral / genetics
  • Virus Replication


  • Capsid Proteins
  • RNA, Viral