| pubmed-article:8972859 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C0032098 | lld:lifeskim |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C0035681 | lld:lifeskim |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C0035899 | lld:lifeskim |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C0040649 | lld:lifeskim |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C1707719 | lld:lifeskim |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C0037791 | lld:lifeskim |
| pubmed-article:8972859 | lifeskim:mentions | umls-concept:C0205319 | lld:lifeskim |
| pubmed-article:8972859 | pubmed:issue | 23 | lld:pubmed |
| pubmed-article:8972859 | pubmed:dateCreated | 1997-1-30 | lld:pubmed |
| pubmed-article:8972859 | pubmed:abstractText | Rapid evolution of ribosomal RNA (rRNA) gene promoters often prevents their recognition in a foreign species. Unlike animal systems, we show that foreign plant rRNA gene promoters are recognized in an alien species, but tend to program transcription by a different polymerase. In plants, RNA polymerase I transcripts initiate at a TATATA element (+1 is underlined) important for promoter strength and start-site selection. However, transcripts initiate from +32 following transfection of a tomato promoter into Arabidopsis. The rRNA gene promoter of a more closely related species, Brassica oleracea, programs both +1 and +29 transcription. A point mutation at +2 improving the identity between the Brassica and Arabidopsis promoters increases +1 transcription, indicating a role for the initiator element in species-specificity. Brassica +29 transcripts can be translated to express a luciferase reporter gene, implicating RNA polymerase II. TATA mutations that disrupt TATA-binding protein (TBP) interactions inhibit +29 transcription and luciferase expression. Co-expressed TBP proteins bearing compensatory mutations restore +29 transcription and luciferase activity, suggesting a direct TBP-TATA interaction. Importantly, +1 transcription is unaffected by the TATA mutations, suggesting that in the context of pol I recognition, the TATA-containing initiator element serves a function other than TBP binding. | lld:pubmed |
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| pubmed-article:8972859 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8972859 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8972859 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:8972859 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:8972859 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8972859 | pubmed:month | Dec | lld:pubmed |
| pubmed-article:8972859 | pubmed:issn | 0305-1048 | lld:pubmed |
| pubmed-article:8972859 | pubmed:author | pubmed-author:PikaardC SCS | lld:pubmed |
| pubmed-article:8972859 | pubmed:author | pubmed-author:DoellingJ HJH | lld:pubmed |
| pubmed-article:8972859 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8972859 | pubmed:day | 1 | lld:pubmed |
| pubmed-article:8972859 | pubmed:volume | 24 | lld:pubmed |
| pubmed-article:8972859 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8972859 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8972859 | pubmed:pagination | 4725-32 | lld:pubmed |
| pubmed-article:8972859 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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