THE NUCLEOTIDE-SEQUENCE OF PARSNIP YELLOW FLECK VIRUS - A PLANT PICORNA-LIKE VIRUS

被引:22
|
作者
TURNBULLROSS, AD [1 ]
REAVY, B [1 ]
MAYO, MA [1 ]
MURANT, AF [1 ]
机构
[1] SCOTTISH CROP RES INST, DUNDEE DD2 5DA, SCOTLAND
来源
JOURNAL OF GENERAL VIROLOGY | 1992年 / 73卷
关键词
D O I
10.1099/0022-1317-73-12-3203
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
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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页码:3203 / 3211
页数:9
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