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Complete genome and phylogenetic position of bovine papillomavirus type 7

¹ Division of Virology, Chiba Prefectural Institute of Public Health, 666-2 Nitona-cho, Chuou-ku, Chiba 260-8715, Japan
² Department of Molecular Virology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuou-ku, Chiba 260-8670, Japan

Correspondence
Yoshimi Tomita
tomita{at}faculty.chiba-u.jp

Six bovine papillomavirus (BPV) types and 16 putative BPV types have been reported previously. Here, the complete genome sequence of BAPV6, a novel putative BPV type isolated from cattle in Japan, was determined by using multiple-primed rolling-circle amplification. The genome consisted of 7412 bp (G+C content of 46 mol%) that encoded five early (E1, E2, E4, E6 and E7) and two late (L1 and L2) genes, but did not encode the E5 gene. The E6 protein contained a non-consensus CxxC(x)₃₃CxxC and a consensus CxxC(x)₂₉CxxC zinc-binding domain, and the E7 protein lacked the LxCxE motif. The nucleotide sequence of the L1 open reading frame (ORF) was related most closely (57–58 %) to the L1 ORF of member(s) of the genera Betapapillomavirus, Gammapapillomavirus and Pipapillomavirus. Phylogenetic analysis based on the complete L1 ORF suggests that BAPV6 should be classified in a novel genus in the family Papillomaviridae as BPV-7.

The GenBank/EMBL/DDBJ accession number for the complete genome sequence of BPV-7 is DQ217793.

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