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. 1997 Jul 15;25(14):2723–2729. doi: 10.1093/nar/25.14.2723

Tetracycline-controlled transcription in eukaryotes: novel transactivators with graded transactivation potential.

U Baron 1, M Gossen 1, H Bujard 1
PMCID: PMC146828  PMID: 9207017

Abstract

Several tetracycline-controlled transactivators (tTA) were generated which differ in their activation potential by >3 orders of magnitude. The transactivators are fusions between the Tet repressor and minimal transcriptional activation domains derived from Herpes simplex virus protein 16 (VP16). By reducing the VP16 moiety of the previously described tTA to 12 amino acids, potential targets for interactions with various cellular transcription factors were eliminated, as were potential epitopes which may elicit a cellular immune response. When compared with the originally described tTA, these new transactivators are tolerated at higher intracellular concentrations. This will facilitate establishment of tet regulatory systems under a variety of conditions, but particularly when cell type-restricted tetracycline-controlled gene expression is to be achieved in transgenic organisms via homologous recombination.

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Selected References

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