We have determined the complete nucleotide sequence (Accession No. AF484251) of the Pepino mosaic virus (PepMV) RNA genome. PepMV is the etiological agent of a new disease which affects tomato crops in Europe and North America. The PepMV genome consists of one single stranded positive sense RNA 6410 nt long that contains five open reading frames (ORFs). ORF 1 is the putative RNA dependent RNA polymerase (RdRp), as it has the characteristic methyltransferase, NTP-binding and polymerase motifs. ORF 2 to 4 form the PepMV triple gene block. ORF 5 codes for the capsid protein. Two short untranslated regions flank the coding regions and there is a poly(A) tail at the 3′end of the genomic RNA. Thus, the genome organization of PepMV is that of a typical member of the genus Potexvirus . The nucleotide sequence obtained shares an overall 99% identity with the genomic RNA of a PepMV isolate from UK which has been partially sequenced. Protein coded by ORF4 is the least conserved between both isolates (95% amino acid identity), whereas proteins coded by ORF3 and ORF5 are identical.
Archives of Virology – Springer Journals
Published: Sep 1, 2002
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