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. 1992 Dec:73 ( Pt 12):3203-11.
doi: 10.1099/0022-1317-73-12-3203.

The nucleotide sequence of parsnip yellow fleck virus: a plant picorna-like virus

A D Turnbull-Ross  1 , B Reavy, M A Mayo, A F Murant
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The nucleotide sequence of parsnip yellow fleck virus: a plant picorna-like virus

A D Turnbull-Ross et al. J Gen Virol. 1992 Dec.

Abstract

The complete sequence of 9871 nucleotides (nts) of parsnip yellow fleck virus (PYFV; isolate P-121) was determined from cDNA clones and by direct sequencing of viral RNA. The RNA contains a large open reading frame between nts 279 and 9362 which encodes a polyprotein of 3027 amino acids with a calculated M(r) of 336212 (336K). A PYFV polyclonal antiserum reacted with the proteins expressed from phage carrying cDNA clones from the 5' half of the PYFV genome. Comparison of the polyprotein sequence of PYFV with other viral polyprotein sequences reveals similarities to the putative NTP-binding and RNA polymerase domains of cowpea mosaic comovirus, tomato black ring nepovirus and several animal picornaviruses. The 3' untranslated region of PYFV RNA is 509 nts long and does not have a poly(A) tail. The 3'-terminal 121 nts may form a stem-loop structure which resembles that formed in the genomic RNA of mosquito-borne flaviviruses.

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