TABLE 1.

Genome packaging densities of double-stranded RNA (dsRNA) viruses^a

Virus		Genome features			Capsid features
Family	Member	No. genome segments	Size (kbp)c	Length (μm)d	CSP (aa’s)	Φe/irf (nm)	Genome density (bp/100 nm3)g
Herpesviridae	HCMVb	1	200	68	1,370	130/45	38
Reoviridae	Cypovirus	10	31.4	8.79	1,333	58/24	54
	Aquareovirus, GCRV	11	23.6	6.63	1,027	60/23	46
	Orbivirus, BTV	10	19.2	5.4	901	52/22	43
	Rotavirus	11	18.5	5.18	880	52/23.5	34
Cystoviridae	Phage Φ6	3	13.4	3.77	769	50/20	40
Totiviridae	TVV2	1	4.65	1.31	709	43/18	19
	ScV-L-A	1	4.6	1.29	680	43/17	21
Picobirnaviridae	2	4.2	1.18	590	35/14	36
Partitiviridae	PsV-Sh	1(2)i	1.7/3.3	0.477	420	35/12	23
Chrysoviridae	PcVh	1(4)i	3.2/12.6	0.899	109	40/16	19
Quadriviridae	RnQV1	1–2(4)	4.3/17.1	1.21	1,356 + 1,061	4,716	25 (50)j

^aTable adapted with data from Luque et al. (36).

^bHuman Cytomegalovirus, a dsDNA virus, a lineage lacking genome segmentation, and characterized with B-from dsDNA.

^cApproximate genome length.

^dGenome length calculated on rise/bp of 2.81 Å for dsRNa and 3.4 Å for dsDNA.

^eApproximate outer diameter.

^fApproximate inner radius.

^gGenome density when capsid cavity is assumed to be a perfect sphere containing only nucleic acids.

^hPsV-S, penicillium stoloniferum virus S; PcV, penicillium chrysogenum virus.

ⁱPsV-S and PcV have genomes formed of 2 and 4 segments, respectively.

^jDensity value of 25 if there is 1 dsRNA molecule per particle or 50 if there are 2 dsRNA molecules per particle.