Table 1.

Gene lengths and percent identity between BtHV and other hepadnaviruses

Virus	Full genome		Pol gene				preS1/preS2/S gene				preC/C gene				X gene
	nt	%ID	nt	%ID	aa	%ID	nt	%ID	aa	%ID	nt	%ID	aa	%ID	nt	%ID	aa	%ID
PEPR6	3,278		2,607		868		1,248		415		654		217		429		142
776	3,230	70.3	2,562	71.7	853	64.1	1,200	74.3	399	62.9	654	81.0	217	80.1	435	73.7	144	55.8
TBHBV	3,149	59.8	2,484	59.6	827	55.2	1,149	67.6	382	57.3	663	65.1	220	58.0	408	57.0	135	43.3
HBHBV	3,377	73.0	2,709	73.8	902	70.0	1,347	76.9	448	69.2	654	74.7	217	75.6	426	78.6	141	64.8
RBHBV	3,368	72.5	2,700	73.4	899	69.7	1,338	76.3	445	66.4	654	76.5	217	76.9	426	77.7	141	62.0
HBV	3,215	63.1	2,532	63.0	843	57.0	1,203	64.1	400	57.0	639	76.3	212	75.9	465	56.5	154	43.4
WMHBV	3,179	63.2	2,508	63.3	835	55.8	1,176	64.7	391	59.0	636	76.2	211	73.7	459	60.4	152	43.8
WHV	3,308	62.8	2,640	60.6	879	55.0	1,281	64.8	426	47.5	678	78.9	225	78.0	426	67.8	141	51.0
ASHV	3,302	63.4	2,634	60.5	877	54.5	1,284	64.5	427	48.5	654	79.3	217	77.6	417	68.0	138	55.0
DHBV	3,006	37.5	2,376	36.3	791	31.9	1,104	37.7	367	18.1	888	30.9	295	10.8	NA	/	NA	/

nt, the length of the gene in nucleotides; %ID, the percent identity of nucleotide sequence and amino acid sequence between BtHV PEPR6 and the others; aa, the length of the gene in amino acids; NA, X gene not available; the accession numbers of 776 (BtHV), TBHBV, HBHBV, RBHBV, HBV, WMHBV, WHV, ASHV and DHBV are JX941466, KC790381, KC790377, KC790376, D00329, AF046996, AY344076, U29144 and EU429324, respectively. The highest identities are in bold italic