Nucleic Acids Research, 1981, Vol. 9, No. 16 4007-4021
© 1981
MOLECULAR BIOLOGY |
Sequences at the 3' ends of yeast viral dsRNAs: proposed transcriptase and replicase initiation sites
Division of Cell and Molecular Biology, State University of New York at Buffalo Buffalo, NY 14260, USA
Received April 3, 1981. ScV is a double-stranded RNA virus of yeast consisting of two separately encapsidated dsRNAs (L and M). ScV1 and ScV2 are two dsRNA viruses present in two different yeast killer strains, K1 and K2. Our 3' end sequence analysis shows that the two sets of viral dsRNAs from ScV1 and ScV2 are very similar. Consensus sequences for transcriptase and replicase initiation are proposed. A stem and loop structure with a 3' terminal AUGC sequence, like that of several plant virus plus strand RNAs, is present at the putative replicase initiation site of one of the yeast viral RNA plus strands.