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  Three picornaviruses have been identified in wild birds of the family Turdidae (thrushes). It has been proposed (Woo et al., 2010) that they be named turdivirus (TV) 1, TV-2 and TV-3. Furthermore, Woo et al. (2010) suggested that these viruses represented two distinct genera, based on differing genome features and sequence distance. They proposed that TV-1 be classified in a new genus named "Orthoturdivirus" and that TV-2 and TV-3 be placed with a genus called "Paraturdivirus".

Virus Strain Region Length Accession No. Reference Comments
TV-1 00356 CG 8035 GU182406 Woo et al., 2010 Pale Thrush; Hong Kong, 2007
TV-1 00805 CG 8034 GU182407 Woo et al., 2010 Grey-backed Thrush; Hong Kong, 2007
TV-2 10717 CG 7641 GU182408 Woo et al., 2010 Oriental Magpie Robin; Hong Kong, 2006
TV-2 007167 CG 7640 GU182409 Woo et al., 2010 Oriental Magpie Robin; Hong Kong, 2007
TV-3 10878 CG 7678 GU182410 Woo et al., 2010 Grey-backed Thrush; Hong Kong, 2006
TV-3 00742 CG 7671 GU182411 Woo et al., 2010 Grey-backed Thrush; Hong Kong, 2007

Genome organisation:

Turdivirus 1:

VPg+5'UTR[L/1AB-1C-1D/2AH-box/NC-2B-2C/3A-3BVPg-3Cpro-3Dpol]3'UTR-poly(A)

Turdivirus 2 & 3:

VPg+5'UTR[L/1AB-1C-1D/2A-2B-2C/3A-3BVPg-3Cpro-3Dpol]3'UTR-poly(A)


References

Woo, P.C., Lau, S.K., Huang, Y., Lam, C.S., Poon, R.W., Tsoi, H.W., Lee, P., Tse, H., Chan, A.S., Luk, G., Chan, K.H. and Yuen, K.Y. (2010). Comparative analysis of six genome sequences of three novel picornaviruses, turdiviruses 1, 2 and 3, in dead wild birds and proposal of two novel genera, Orthoturdivirus and Paraturdivirus, in Picornaviridae. J. Gen. Virol. 91: 2433-2448. 2010 Jun 16. [Epub ahead of print] PubMed PMID: 20554801.