Nucleic Acids Research, 1986, Vol. 14, No. 11 4673-4682
© 1986
Articles |
RNA 2 of tobacco rattle virus strain TCM encodes an unexpected gene
Department of Biochemistry, State University of Leiden PO Box 9505, 2300 RA Leiden, The Netherlands
*To whom correspondence should be addressed
Received March 11, 1986. Revised May 2, 1986. Accepted May 2, 1986.
The sequence of the 3'-terminal 1210 nucleotides of RNA 1 and the complete sequence of 3389 nucleotides of RNA 2 of tobacco rattle virus (TRV) strain TCM has been deduced. The sequence of the 3'-terminal 1099 nucleotides of RNAs 1 and 2 was found to be Identical. Thus the genome of this TRV strain is partially diploid, encoding a 16K protein in both RNA 1 and RNA 2. The sequence that is unique to RNA 2 contains two open reading frames: the coat protein cistron and a cistron for a 29.1K protein, which shows no homology with the RNA 1 encoded 28.8K protein. cDNA probes corresponding to these two open reading frames cross-hybridized to pea early-browning virus RNA 2, but not to RNA 2 of five other tobraviruses tested.
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