| pubmed-article:18216093 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C0206679 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C1337106 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C0076918 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C0184512 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C0086860 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C0080206 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C1167622 | lld:lifeskim |
| pubmed-article:18216093 | lifeskim:mentions | umls-concept:C0205087 | lld:lifeskim |
| pubmed-article:18216093 | pubmed:issue | 7 | lld:pubmed |
| pubmed-article:18216093 | pubmed:dateCreated | 2008-3-12 | lld:pubmed |
| pubmed-article:18216093 | pubmed:abstractText | We have recently shown that ICP4 has a differential requirement for the general transcription factor TFIIA in vitro (S. Zabierowski and N. DeLuca, J. Virol. 78:6162-6170, 2004). TFIIA was dispensable for ICP4 activation of a late promoter (gC) but was required for the efficient activation of an early promoter (tk). An intact INR element was required for proficient ICP4 activation of the late promoter in the absence of TFIIA. Because TFIIA is known to stabilize the binding of both TATA binding protein (TBP) and TFIID to the TATA box of core promoters and ICP4 has been shown to interact with TFIID, we tested the ability of ICP4 to stabilize the binding of either TBP or TFIID to the TATA box of representative early, late, and INR-mutated late promoters (tk, gC, and gC8, respectively). Utilizing DNase I footprinting analysis, we found that ICP4 was able to facilitate TFIIA stabilized binding of TBP to the TATA box of the early tk promoter. Using mutant ICP4 proteins, the ability to stabilize the binding of TBP to both the wild-type and the INR-mutated gC promoters was located in the amino-terminal region of ICP4. When TFIID was substituted for TBP, ICP4 could stabilize the binding of TFIID to the TATA box of the wild-type gC promoter. ICP4, however, could not effectively stabilize TFIID binding to the TATA box of the INR-mutated late promoter. The additional activities of TFIIA were required to stabilize the binding of TFIID to the INR-mutated late promoter. Collectively, these data suggest that TFIIA may be dispensable for ICP4 activation of the wild-type late promoter because ICP4 can substitute for TFIIA's ability to stabilize the binding of TFIID to the TATA box. In the absence of a functional INR, ICP4 can no longer stabilize TFIID binding to the TATA box of the late promoter and requires the additional activities of TFIIA. The stabilized binding of TFIID by TFIIA may in turn allow ICP4 to more efficiently activate transcription from non-INR containing promoters. | lld:pubmed |
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| pubmed-article:18216093 | pubmed:language | eng | lld:pubmed |
| pubmed-article:18216093 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:18216093 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:18216093 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:18216093 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:18216093 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:18216093 | pubmed:month | Apr | lld:pubmed |
| pubmed-article:18216093 | pubmed:issn | 1098-5514 | lld:pubmed |
| pubmed-article:18216093 | pubmed:author | pubmed-author:DelucaNeal... | lld:pubmed |
| pubmed-article:18216093 | pubmed:author | pubmed-author:ZabierowskiSu... | lld:pubmed |
| pubmed-article:18216093 | pubmed:issnType | Electronic | lld:pubmed |
| pubmed-article:18216093 | pubmed:volume | 82 | lld:pubmed |
