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Rule of six (viruses)

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Characteristic of paramyxovirus genomes
Electron micrograph of the ribonucleoprotein of mumps virus, which has a herring-bone like structure
For the Coronavirus restriction, see The Health Protection (Coronavirus, Restrictions) (No. 2) (England) Regulations 2020 § 'Rule of six'.

The rule of six is a feature of some paramyxovirus genomes. These RNA viruses have genes made from RNA and not DNA, and their whole genome – that is the number of nucleotides – is always a multiple of six. This is because during their replication, these viruses are dependent on nucleoprotein molecules that each bind to six nucleotides.

References

  1. Easton, AJ and Ling R (2010). Mahy BWJ and Van Regenmortel MHV (ed.). Desk Encyclopedia of General Virology. Academic Press. p. 496. ISBN 9780123751461..
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