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The complete nucleotide sequence of carnation mottle genomic RNA (4003 nucleotides) is presented. The sequence was determined for cloned cDNA copies of viral RNA containing over 99% of the sequence and was completed by direct sequence analysis of RNA and cDNA transcripts. The sequence contains two long open reading frames which together can account for observed translation products. One translation product would arise by suppression of an amber termination codon and the sequence raises the possibility that a second suppression event could also occur. Sequence homology exists between a portion of the carnation mottle virus sequence and that of putative RNA polymerases from other RNA viruses.
Guilley et al. (Tue,) studied this question.