title: The thyroid transcription factor 2 (TTF-2) is a promoter-specific DNA-binding independent transcriptional repressor.
abstract: The thyroid transcription factor TTF-2 is a forkhead-containing protein involved in thyroid-specific gene expression and necessary for thyroid morphogenesis. In this paper, we demonstrate that TTF-2 is able to inhibit the activity of the thyroid-specific transcription factors TTF-1 and Pax-8 only on certain promoters. We identified the minimal protein domain responsible for repressor activity, which behaves as an independent functional domain, and we show that repression by TTF-2 is DNA-binding independent. We suggest that TTF-2 is able to interfere with a specific cofactor required for TTF-1 and Pax-8 activity.
authors.affiliation: Stazione Zoologica "Anton Dohrn,", Naples, 80121, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Perrone
authors.forename: M
authors.initials: M
authors.lastname: Pasca di Magliano
authors.forename: M
authors.initials: M
authors.lastname: Zannini
authors.forename: R
authors.initials: R
authors.lastname: Di Lauro
mesh_terms: D004247:DNA / Q000235:genetics / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000037:antagonists & inhibitors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D004742:Enhancer Elements, Genetic / Q000235:genetics; D051858:Forkhead Transcription Factors; D017930:Genes, Reporter / Q000235:genetics; D006367:HeLa Cells; D006801:Humans; D007453:Iodide Peroxidase / Q000235:genetics; D009154:Mutation / Q000235:genetics; D009687:Nuclear Proteins / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism; D000072636:PAX8 Transcription Factor; D051761:Paired Box Transcription Factors; D011401:Promoter Regions, Genetic / Q000235:genetics*; D011485:Protein Binding; D017434:Protein Structure, Tertiary; D012097:Repressor Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D013379:Substrate Specificity; D013954:Thyroglobulin / Q000235:genetics; D013961:Thyroid Gland / Q000378:metabolism*; D000074482:Thyroid Nuclear Factor 1; D015534:Trans-Activators / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism; D014157:Transcription Factors / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism; D014162:Transfection
chemical_list: D004268:DNA-Binding Proteins; C106894:FOXE1 protein, human; D051858:Forkhead Transcription Factors; C000614412:NKX2-1 protein, human; D009687:Nuclear Proteins; D000072636:PAX8 Transcription Factor; C083325:PAX8 protein, human; D051761:Paired Box Transcription Factors; D012097:Repressor Proteins; D000074482:Thyroid Nuclear Factor 1; D015534:Trans-Activators; D014157:Transcription Factors; D004247:DNA; D013954:Thyroglobulin; D007453:Iodide Peroxidase