| pubmed-article:8207790 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8207790 | lifeskim:mentions | umls-concept:C0205725 | lld:lifeskim |
| pubmed-article:8207790 | lifeskim:mentions | umls-concept:C0521026 | lld:lifeskim |
| pubmed-article:8207790 | lifeskim:mentions | umls-concept:C0020792 | lld:lifeskim |
| pubmed-article:8207790 | lifeskim:mentions | umls-concept:C0033684 | lld:lifeskim |
| pubmed-article:8207790 | lifeskim:mentions | umls-concept:C0005456 | lld:lifeskim |
| pubmed-article:8207790 | lifeskim:mentions | umls-concept:C0086860 | lld:lifeskim |
| pubmed-article:8207790 | pubmed:issue | 7 | lld:pubmed |
| pubmed-article:8207790 | pubmed:dateCreated | 1994-7-13 | lld:pubmed |
| pubmed-article:8207790 | pubmed:abstractText | The 86-kDa IE2 protein (IE86) of human cytomegalovirus (HCMV) can act as both an activator and a repressor of gene expression. The mechanisms for both of these functions are not well defined. It has recently been demonstrated that this protein has sequence-specific DNA binding properties: it interacts directly with a target sequence that is located between the TATA box and the cap site of its own promoter. This sequence, termed the CRS (cis repression signal) element, is required for negative autoregulation of the IE1/IE2 enhancer/promoter by IE2. We demonstrate now that binding of this protein to DNA is not confined to this site but occurs also within an early promoter of HCMV that has previously been shown to be strongly IE2 responsive. By DNase I protection analysis using a purified, procaryotically expressed IE2 protein, we could identify three binding sites within the region of -290 to -120 of the UL112 promoter of HCMV. Competition in DNase I protection experiments as well as gel retardation experiments showed that the identified binding sites are specific and have high affinity. Deletion of IE2 binding sites from this promoter reduced the level of transactivation; however, the remaining promoter could still be stimulated about 40-fold. Constructs in which IE2 binding sites were fused directly to the TATA box of the UL112 promoter did not reveal a significant contribution of these sequences to transactivation. However, if an IE2 binding site was reinserted upstream of nucleotide -117 of the UL112 promoter, an increase in transactivation by IE2 was obvious, whereas a mutated sequence could not mediate this effect. This finding suggests that DNA-bound IE2 can contribute to transactivation but seems to require the presence of additional transcription factors. Moreover, a comparison of the detected IE2 binding sites could not detect a strong homology, suggesting that this protein may be able to interact with a broad spectrum of different target sequences. | lld:pubmed |
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| pubmed-article:8207790 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8207790 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8207790 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:8207790 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:8207790 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8207790 | pubmed:month | Jul | lld:pubmed |
| pubmed-article:8207790 | pubmed:issn | 0022-538X | lld:pubmed |
| pubmed-article:8207790 | pubmed:author | pubmed-author:LaneFF | lld:pubmed |
| pubmed-article:8207790 | pubmed:author | pubmed-author:GebertSS | lld:pubmed |
| pubmed-article:8207790 | pubmed:author | pubmed-author:StammingerTT | lld:pubmed |
| pubmed-article:8207790 | pubmed:author | pubmed-author:ArltHH | lld:pubmed |
| pubmed-article:8207790 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8207790 | pubmed:volume | 68 | lld:pubmed |
| pubmed-article:8207790 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8207790 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8207790 | pubmed:pagination | 4117-25 | lld:pubmed |
| pubmed-article:8207790 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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