A specific internal RNA polymerase recognition site of VSV RNA is involved in the generation of DI particles
Cell, ISSN: 0092-8674, Vol: 18, Issue: 3, Page: 749-757
1979
- 41Citations
- 6Captures
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Metrics Details
- Citations41
- Citation Indexes41
- CrossRef41
- 19
- Captures6
- Readers6
Article Description
The 3′ terminal sequences of four different DI particle RNAs ranging in size from 10S to 30S have been determined directly using rapid RNA sequencing methods or deduced, in the case of the fourth DI RNA, from the complementary sequence of a small RNA transcribed from this part of the genome ( Schubert et al., 1978 ). One DI particle (DI 011) contains covalently linked genomic and antigenomic RNA. The 5′ end of this RNA is identical to that of VSV RNA, as determined by annealing for at least 1 kb, as well as to the other DI particle RNAs used in this study. The 3′ ends of the other three DI particle RNAs are exact copies of the common 5′ terminal sequence for 48 nucleotides in two cases and 45 nucleotides in the third. Beyond these complementary regions the sequences are different for each DI RNA. The fact that these regions differ in length by only three nucleotides, despite the wide differences in the overall size of the DI particle RNAs, indicates that if these DIs were formed by the copy-back mechanisms similar to those proposed by Leppert, Kort and Kolakofsky (1977) and Huang (1977), a specific recognition site for the RNA polymerase must be involved in copying the 5′ terminus. We determined the 5′ terminal sequence from position 43–48 at the end of the complementary region and found it to be 5′-GGUCUU-3′. This hexamer is also part of other highly conserved terminal RNA polymerase initiation sites ( Keene et al., 1978 ; Keene, Schubert and Lazzarini, 1979 ) and may be a specific internal RNA polymerase recognition site. We conclude that this sequence is one of the elements involved in the genesis of DI particle chromosomes containing short complementary sequences at their termini. The ability of the polymerase to resume synthesis at or near a specific recognition site is discussed.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/0092867479901284; http://dx.doi.org/10.1016/0092-8674(79)90128-4; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0018734491&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/229963; https://linkinghub.elsevier.com/retrieve/pii/0092867479901284
Elsevier BV
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