The influenza A virus NS genome segment displays lineage-specific patterns in predicted RNA secondary structure

BMC Research Notes

Table 1 Host distribution of the predicted hairpin RNA secondary structures in the NS gene positive-sense RNA of influenza A viruses

Influenza A virus (IAV)	Number of strains	Predicted secondary structure %
		Nt 82–148		Nt 497–564
		Hairpin (%)	Multi-branch stem-loop (%)	Hairpin (%)
Human IAVs	12,192	18	41	52
Human H1N1 IAVs	1483	88	3	87*
Human H2N2 IAVs	128	90	1	5*
Human H3N2 IAVs	5342	8*	4	1*
Human H1N1_pdm2009 IAVs	4913	2*	97*	98*
Human and swine IAVs of avian origin (e.g., H5, H7, and H9)	279	91	6	69*
Swine IAV	2794	10	58	50
Swine triple reassortant IAVs	1467	1	69*	14*
“Classical” swine IAVs lineage	349	4	46*	88*
“Eurasian” swine IAVs lineage	382	55*	0*	98*
Avian IAVs	9674	60	35	90
Canine IAVs	234	95	0	85
Equine IAVs	153	91	2	8
Environmental IAVs	337	73	13	66
IAVs from other species	94	70	10	79

ISSN: 1756-0500