Table 3. Molecular characteristics of H6 viruses in this study.

Virus	Amino acid sequence at cleavage site of HA	Receptor-binding sites in HAa						Key position in HAa			Amino acid deletion in NA (position)	M2	PB2		NS1	PA
		137	138	169–171	186	190	226–228	156	263	380		31	627	701	92	38
EV/JX/24/09	PQIETR↓GLF	S	A	TNT	P	E	QRG	H	S	N	Yes (60–68)	S	E	D	D	I
EV/JX/25/09	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/1/09	PQIETR↓GLF	S	A	TNT	P	E	QRG	H	S	N	Yes (60–68)	S	E	D	D	I
EV/HB-JZ/02/10	PQIETR↓GLF	K	A	NNT	P	E	QRG	H	N	N	No	S	E	D	D	I
EV/HN/2/10	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/03/10	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/07/10	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/JX/15/10	PQIETR↓GLF	S	S	RNT	T	E	QRG	R	N	N	No	S	E	D	D	I
EV/HN/11/10	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/14/10	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/GX/02/10	PQIETR↓GLF	S	A	TNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/JX/17/11	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/JX/19/11	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/18/11	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/19/11	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I
EV/HN/20/11	PQIETR↓GLF	S	A	RNT	P	E	QRG	H	S	N	No	S	E	D	D	I

^aH3 numbers were used throughout.