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Table 2 Volume variation within icosahedral families

From: Gene overlapping and size constraints in the viral world

Family Genera Inner capsid volume CVa Outer capsid volume CVa
Single-stranded viruses
 Bromoviridae 2 0.4 0.16
 Caliciviridae 4 0.03 0.1
 Comoviridae 2 0.11 0.02
 Leviviridae 2 0.03 0.04
 Parvoviridae 3 0.11 0.48
 Picornaviridae 5 0.1 0.84
 Tetraviridae 2 0.04 0.06
 Tombusviridae 3 0.19 0.2
 Avgerage 2.88 0.13 0.24
Double-stranded viruses
 Papillomaviridae 2 0.11 0.06
 Partitiviridae 2 0.06 0.01
 Podoviridae 4 0.04 0.03
 Reoviridae 7 0.4 0.31
 Siphoviridae 2 0.49 0.33
 Avgerage 3.4 0.22 0.15
Overall average 3.08 0.16 0.2
  1. a CV coefficient of variation, defined as the ratio of the standard deviation σ to the mean μ