| pubmed-article:3418698 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C0035736 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C0376417 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C0441655 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C0086860 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C1519249 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C1704973 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C0678594 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C0936012 | lld:lifeskim |
| pubmed-article:3418698 | lifeskim:mentions | umls-concept:C1514873 | lld:lifeskim |
| pubmed-article:3418698 | pubmed:issue | 1 | lld:pubmed |
| pubmed-article:3418698 | pubmed:dateCreated | 1988-10-17 | lld:pubmed |
| pubmed-article:3418698 | pubmed:abstractText | An RNA-dependent RNA polymerase (replicase) activity that specifically copies brome mosaic virus (BMV) RNAs in vitro can be prepared from BMV-infected barley leaves. The signals directing complementary (minus) strand synthesis reside within the 3' 134-nucleotide-long tRNA-like structure that is common to each of the virion RNAs. By studying the influence of minus strand synthesis of numerous mutations introduced throughout this region of the RNA, we have mapped in detail the sequence and structural elements necessary for minus strand promoter activity. Sequence alterations (either substitutions or small, structurally discrete deletions) in most parts of the tRNA-like structure resulted in decreased minus strand synthesis. This suggests that BMV replicase is a large enzyme, possibly composed of several subunits. The lowest activities, 5 to 8% of wild type, were observed for mutants with substitutions at three separate loci, identifying one structural and two sequence-specific elements essential for optimal promoter activity. (1) Destabilization of the pseudoknot structure in the aminoacyl acceptor stem resulted in low promoter activity, demonstrating the importance of a tRNA-like conformation. (2) Substitution of the C residue adjacent to the 3' terminus resulted in low promoter activity, probably by interfering with strand initiation. (3) The low activities resulting from substitutions and a small deletion in arm C suggest this region of the RNA to be a major feature involved in replicase binding. In particular, nucleotides within the loop of arm C appear to be involved in a sequence-specific interaction with the replicase. | lld:pubmed |
| pubmed-article:3418698 | pubmed:grant | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:3418698 | pubmed:language | eng | lld:pubmed |
| pubmed-article:3418698 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:3418698 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:3418698 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:3418698 | pubmed:month | May | lld:pubmed |
| pubmed-article:3418698 | pubmed:issn | 0022-2836 | lld:pubmed |
| pubmed-article:3418698 | pubmed:author | pubmed-author:HallT CTC | lld:pubmed |
| pubmed-article:3418698 | pubmed:author | pubmed-author:DreherT WTW | lld:pubmed |
| pubmed-article:3418698 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:3418698 | pubmed:day | 5 | lld:pubmed |
| pubmed-article:3418698 | pubmed:volume | 201 | lld:pubmed |
| pubmed-article:3418698 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:3418698 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:3418698 | pubmed:pagination | 31-40 | lld:pubmed |
| pubmed-article:3418698 | pubmed:dateRevised | 2008-11-21 | lld:pubmed |
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| pubmed-article:3418698 | pubmed:year | 1988 | lld:pubmed |
| pubmed-article:3418698 | pubmed:articleTitle | Mutational analysis of the sequence and structural requirements in brome mosaic virus RNA for minus strand promoter activity. | lld:pubmed |
| pubmed-article:3418698 | pubmed:affiliation | Department of Biology, Texas A & M University, College Station 77843-3258. | lld:pubmed |
| pubmed-article:3418698 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:3418698 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
| pubmed-article:3418698 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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